What is Truck: Definition and 305 Discussions

A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction, with a cab that is independent of the payload portion of the vehicle. Smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful and may be configured to be mounted with specialized equipment, such as in the case of refuse trucks, fire trucks, concrete mixers, and suction excavators. In American English, a commercial vehicle without a trailer or other articulation is formally a "straight truck" while one designed specifically to pull a trailer is not a truck but a "tractor".The majority of trucks currently in use are still powered by diesel engines, although small- to medium-size trucks with gasoline engines exist in the US, Canada, and Mexico. The market-share of electrically-powered trucks is growing rapidly, expected to reach 7% globally by 2027, and electric motive force already predominates among both the largest and smallest trucks. In the European Union, vehicles with a gross combination mass of up to 3.5 t (3.4 long tons; 3.9 short tons) are known as light commercial vehicles, and those over as large goods vehicles.

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  1. javii

    When the truck is at rest, will the crate also be at rest?

    Homework Statement I have attached the known information. When the truck is at rest, will the crate also be at rest or will it slide downwards? Homework Equations Sum F_y =0 G_max = (my_s)*N G_min = (my_k) * N The Attempt at a Solution I did a Free body diagram on the crate (see the attached...
  2. Mr Davis 97

    Calculating the Force on a Fire Truck Pumping Water onto a Burning Building

    Homework Statement A fire truck pumps a stream of water on a burning building at a rate K kg/s. The stream leaves the truck at an angle ##\theta## with respect to the horizontal and strikes the building horizontally at height h above the nozzle. What is the magnitude of the force on the truck...
  3. Perry

    Solving Speed of a Truck Problem - Calculating Time to Brake

    (mentor note) post moved here from non-homework thread hence no template. A truck is traveling at a v=180 km/h speed on a straight road. At some point, the driver sees a police car and hits the brakes. If his average deceleration is a=-4m/s^2, how long will it take for its speed to go down to...
  4. S

    I Do Birds Flying in a Truck Affect Its Weight?

    As per the title, apologies for bringing this up again, but all previous threads were closed. Now, I can accept the answer and experimentation done, however as both a pilot and mechanical engineer, I just can't get my head around it. It's been bugging me for years, and created the account just...
  5. NARESH NULU

    Automotive Design End Truck for 600mm Length | Naresh

    Hi everyone, my name is naresh. I'm doing m.e, currently I'm in project, I'm designing a loading equipment for a truck. in which i need to design an end truck similar to monorail's case. so i went through some references. but i need to design it for a small length say not morethan 600 mm. How...
  6. Jkyou

    2 trucks pulling a third truck by the means of a pulley

    Homework Statement Two trucks tow a third one by means of inextensible ropes and a pulley attached to them (fig. 1). The accelerations of the two trucks are a1 and a2. What is the acceleration of the third truck that is being towed? (fig.1) is in this link (I'm sorry, I don't know how to post...
  7. C

    Software design for Truck Crane Loader

    Hi everyone, I am starting the re-design of the PLC software for a preexisting Truck Crane Loader. I will receive the Weight Chart to see what the limits are and I was wondering how to exactly calculate the resulting weight on the Crane. The CRANE is already on place, it has two joints and a...
  8. P

    How to figure the stress on a pulling truck frame?

    I'm in college working towards a degree in Mechanical Engineering, so far I've only made it through physics 1 and calculus 2, but I've been building race cars and pulling trucks and tractors since i could hold a wrench. I work for a guy that builds super modified four wheel drive pulling truck...
  9. jbm1939

    Ball dropped out a truck window, find bounce height and dist

    Homework Statement A ball weighing 0.2 lbs is dropped out the window of a pickup truck moving horizontally at 45 mph. If the C.O.R. (e) between the ball and the ground is equal to 0.6, find the height of the ball's first bounce and the horizontal distance it will travel before bouncing again...
  10. L

    How Does Sliding Affect the Force Exerted by the Road on a Truck?

    Homework Statement Two crates of mass m are stacked on the back of a flat-bed truck of mass M. The truck accelerates from rest with a uniform acceleration a. How does the force exerted by the road on the truck change when the masses are stationary vs. when the masses are sliding on the floor of...
  11. R

    Inside the Moving Truck: A Fly's Dilemma

    Suppose a fly/mosquito is flying along with a moving truck. If the fly is outside the truck, then the fly has to move forward to keep up with the truck. What if the same fly was inside the truck. Will it have to move forward inside the moving vehicle just so that it is seen at the same position...
  12. Jonski

    How Can the Acceleration of a Crate on a Truck Be Determined?

    Homework Statement At the instant shown, the driver of the truck has just pressed the accelerator pedal down and the truck has suddenly acquired a tangential acceleration of 2.2m/s^2. Coefficient of static friction between crate and tray = 0.4 Coefficient of kinetic friction between crate and...
  13. G

    A spring is suspended on the ceiling of a truck, find acceleration?

    Homework Statement A massless spring with a spring constant k = 500 N/m is suspended from a hook on the ceiling of a cargo truck moving in a straight line (horizontally) on the highway. A child reaches over from her seat and suspends a 1.1 kg toy on the free end of the spring. The child...
  14. G

    The Energy of a Fire Truck in crash

    Hello all, I am in need of some help. I work for a fire department who had a significant fire truck crash last summer. Because of this, my department has set about making a training program for our drivers. Lucky me, I am in charge of said program. So I need some help. Here is the story. Last...
  15. A

    Determining Tension & Lift Force for Helicopter & Truck

    Homework Statement A 15000-kg helicopter is lowering a 4000-kg truck by a cable of fixed length. The truck, helicopter, and cable are descending at 15.0 m/s and must be slowed to 5.00 m/s in the next 50.0 m of descent to prevent damaging the truck. Assume a constant rate of slowing. Determine...
  16. RLewis42

    Calculating Composite Center of Gravity -- Boat Rack for my Truck

    Hi, I'm new here, great forum! I am building a boat rack for the top of my truck for a particular boat and boat dolly. The boat will be upside down with the beach dolly attached. It is a side loader, so balance is critical. I need to calculate the combined Center Of Gravity (COG) of the boat...
  17. K

    Cylinder on a decelerating truck

    Homework Statement A truck with a cylinder of mass M and moment of inertia ##I=kMR^2## on top has initial velocity v0 and decelerates with deceleration B. the cylinder is attached with a rope to a weight m. the coefficient of friction is μ. The outer radius of the cylinder is R and the smaller...
  18. physicsisgreat

    Decelerating box on a truck and work

    Homework Statement A truck is moving at constant velocity v0 with a box of mass m on it. Suddenly it starts decelerating until its velocity becomes zero. Between the box and the truck the is a force of friction and the deceleration of the truck is sufficiently slow to allow the box not to start...
  19. CHARLOTTE34

    Connecting a 12v Control panel to a 24v Truck system

    Help! I am connecting a Sergent control panel (to power a motorhome 12v/240v system), with a 1200W converter for a solar panel that trickle charges a 12v battery and a leisure battery. This would not be the problem but my truck runs on 2 batteries that run 24v. Does anyone have an idea on how...
  20. M

    Calculating Axle Loads for a Firefighter Vehicle: A Statics Problem

    Hi, my name is Goran and I have a physics/mechanics problem. I'm a 3D artist and I do 3D CAD or non CAD models for a company I work at. New job I got is basically a engineer because I'm about to get my mechanical engineering degree, but it has been a long time I actually calculated something so...
  21. W

    Why Can External Road Forces Be Neglected in a Collision Analysis?

    Homework Statement What is the x-component of the velocity of the stuck-together car and truck just after the collision? speed= -7.32352941176471 m/s You are correct. c) In your analysis in part (b), why can you neglect the effect of the force of the road on the car and truck? Homework...
  22. Valerie Prowse

    Force, speed of truck on a 10.0 degree hill

    Homework Statement A loaded truck has a mass of 3100 kg. The maximum speed it can maintain on a 5.0° hill is 80 km/h. What constant speed could the truck maintain on a hill with a slope of 10.0°? Assume the total force due to air resistance and friction is 700 N and that it does not vary with...
  23. Z

    MHB What Time Do the Bus and Truck Meet?

    hi.. the new similar problem : A bus departs from city X at 07:55 am with speed of 80 kmph . and A truck departs from the city of Y at 08:10 am with a speed of 100 kmph. Two cities 260 km distance. At what time did they meet? how to find way out with easy/quickly method?
  24. tjae

    Find the initial velocity of truck before collision

    Question: A car of mass 1500kg collides head-on with a truck of mass 9000kg. After the collision, the wreckage is at rest. The speed of the car just before the collision was 30m/s. What was the speed of the truck just before the collision? Relevant Equation(s): m1v1+m2v2 = m1v1'+m2v2' (?) My...
  25. V

    Truck collision with a resting car

    So a truck hits a car, which is at rest. Would there be a moment in time when a car stops exerting a force in equal magnitude but in opposite direction (Newton's third law)? To put in some arbitrarily numbers to make the example easier to understand. Truck weighs 1000 kg, and the car weighs...
  26. S

    Calculating Frequency of Siren Heard by Truck After Police Passes

    Homework Statement A truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction. If the frequency of the siren relative to the police car is 500 Hz, what is the frequency heard by an observer in the truck after the police car passes the truck? (The speed of sound in...
  27. Calpalned

    What is the work done by a tow truck pulling a car 1 km?

    Homework Statement A tow truck drags a stalled car along a road. The chain makes an angle of 30° with the road and the tension in the chain is 1500 N. How much work is done by the truck in pulling the car 1 km? Homework Equations Work = Force * distance The Attempt at a Solution By drawing a...
  28. P

    Calculating the Initial Kinetic Energy & Momentum of a Truck

    Homework Statement A truck is initially moving at velocity v. The driver presses the brake in order to slow the truck to a stop. The brake applies a constant force F to the truck. The truck rolls a distance x before coming to a stop, and the time it takes to stop is t. 8. Which of the following...
  29. M

    How Should Forces Be Calculated in a Truck-Trailer System?

    I have a truck (m1,27000 kg) pulling a trailer (m2, 8500 kg) with a chain holding the two together (T). The overall acceleration is 0.78 m/s^2. Find f1 force on the truck, f2 force on the trailer and T, tension force. Here is what I did: since the force comes all from the truck, f1 =...
  30. WhatmoughG

    Designing a Kite for a Truck Adventure

    Hey, I am embarking on a drive to the arctic circle. I have spent a bit of time googling looking for a kite to pull behind my truck to film the adventure and can't find much useful information. Is there anyone that could design or point me in the direction of a place to design a decent kite to...
  31. R

    Max Acceleration for Truck w/Crate & CoFriction

    Homework Statement [/B]A 5228 kg flatbed truck has a 226 kg crate resting on the level bed. If the static coefficient of friction is 0.27, what is the maximum acceleration the truck can achieve without the crate slipping off?Homework Equations [/B]f=maThe Attempt at a Solution i believe i need...
  32. H

    Homemade diesel-electric platform truck

    Hi, this is my diesel-electric conversion for what was a battery only powered platform truck. Its got a 30hp diesel engine, a 6 Kw DC generator, and another 6 Kw AC generator. One thing to point out is that I'm running it only with the generators, no batteries. Here's some pics of it: Diesel...
  33. T

    Acceleration of a Truck with a Broken Chain: Finding the Resultant Force

    Homework Statement A 3000kg truck uses a chain to drag a 500kg log down a road at a constant speed of 10m/s. The friction between the ground and the log is 1000N. If the chain suddenly breaks, what is the acceleration of the truck?[/B]Homework Equations a=F/m[/B]The Attempt at a Solution I...
  34. G

    Driving an Oil Tanker Truck on Curvy Roads

    Dear Friends! I want to know the experience of driver of the oil container(tanker) truck shown in two forms while driving on a road with curves at varying speeds. 1.When container has no partition. 2.When container is partitioned but contains same quantity of oil.
  35. C

    Free Body Diagram of a Truck with a Box

    Homework Statement A large box containing your new computer sits on the bed of your pickup truck. You are stopped at a red light. The light turns green and you stomp on the gas and the truck accelerates. To your horror, the box starts to slide toward the back of the truck. (Assume that the...
  36. W

    Flatbed truck going round a circular road on an incline

    Homework Statement The problem statement is in the attachments.Homework Equations F=maThe Attempt at a Solution I uploaded the solution to the problem. I have had no trouble deriving the first two equations for the summation of forces in the x, n and t directions, however I am having trouble...
  37. stateofdogma

    Max Velocity of Truck on Banked Track: Spider at Rest

    Homework Statement A Truck is going around a circular track of radius 72m and is banked at 60 deg. A spider is at rest on the side of the truck and the coeffiecient of friction is 0.91, what is the maximum velocity of the truck so that the spider is at rest. Homework Equations F =...
  38. M

    Truck Bed Cover and Gas Spring Forces

    I am working on making an aluminum truck bed cover for a customer despite my attempts to pass it up, he insists that i make it for him. Fabricating it, is not a problem, but I am having a hard time figuring out the force and length of gas springs needed and the best mounting angles for them. I...
  39. C

    MHB What is the angular velocity of a hinged pole as a truck accelerates?

    The uniform 3.6 m pole is hinged to the truck bed and released from the vertical position as the truck starts from rest with an acceleration of 0.90 m/s2. If the acceleration remains constant during the motion of the pole, calculate the angular velocity of the pole as it reaches the horizontal...
  40. B

    Automotive What is the advantage of having a dually truck vs. nondually?

    What is the advantage of having a daully truck vs a truck that just has one tire on each side of an axle? I mean, how is having four tires per axle better than having two tires per axle? There must be some advantage or there would be no reason for daully's.
  41. bananabandana

    Balloon Movement in Accelerating Truck: Solving with Newton's Laws

    Homework Statement A balloon stands upright in a stationary truck. The truck then accelerates forwards. What direction does the balloon move in? Homework Equations Just Newton 1&2. The Attempt at a Solution 1) A Free body diagram on the balloon. We know the balloon accelerates...
  42. S

    Debunking the Myth: Birds in a Truck Riddle Explained by Basic Physics

    I'm doing battle with someone in a debate and I need some help here as, perhaps, I'm not articulating my side well or he's just so stubborn that he doesn't want to learn the error of his ways. :) It's the stupid old riddle where if you have 1000 birds in a plane or a truck (or any enclosed...
  43. K

    Which way does the tanker truck move on frictionless surface?

    Homework Statement A tanker which is full of water is parked on a road without friction. The tanker has an outlet pipe which is on the left side. if we open this pipe does the tanker move? describe the tanker's movement. Homework Equations The Attempt at a Solution The tanker moves to right...
  44. O

    Calculate the force required to pull the truck

    Homework Statement You are dragging a 110 kg trunk across a floor at a constant velocity with a horizontal force of 380N. a) Calculate the coefficient of kinetic friction b)A friend decides to help by pulling on the truck with a force of 150N [up]. Will this help? Calculate the force...
  45. N

    Solving the Newtonian Problem: Truck on Circular Track with Spider

    Homework Statement How would I go about solving this Newtonian problem? A truck is going around a circular track of radius 72m, banked at 60degrees. A spider rests on the inside wall of the truck. The coefficient of static friction b/w truck wall and spider is .91. Find the max speed that the...
  46. A

    Bike Approaching Stopped Truck at Traffic Lights

    Homework Statement A truck is stopped at a traffic light. The moment the light turns green, it begins to accelerate constantly at 3.1m/s^2. A cyclist approaching the truck from behind with a constant velocity of 10m/s was 7.5m behind the truck when the lights turned green. 1)How much time...
  47. V

    Truck Chicken Problem: Fluid Mechanics Solution

    Homework Statement Suppose a truck with chickens inside the truck is crossing the bridge. The truck is overweight with chickens. To solve this problem, you put the chickens outside on the walls of truck. Will the truck still experience problem in crossing the bridge or the situation will remain...
  48. 0

    Newton's Third Law of a car and truck

    I have a question for which I am intensely confused. Lets say a car was pushing a big truck from behind. And the car (and truck) are accelerating, then there is a breakdown because the car applies all the force it has to the truck, which pushes back with equal force. So the car shouldn't be...
  49. siddharth23

    Truck jumping up when it goes ober a speedbreaker

    The company where I'm interning makes machines called compactors. The collect garbage from various places, compact it and it's all dumped together. The equipment mounted on the chassis for the compactin is pretty heavy. What is happening in case of a specific design is, when the truck goes...
  50. Graeme M

    Birds in a truck - I'm not getting it

    First up, I'm a very irregular visitor here. I should point out that I have no science background and only a high school education, so in my discussion here, I might misunderstand simple concepts and I almost certainly won't know the right terminology. I apologise in advance. :) Now, I know...
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