What is Incline: Definition and 989 Discussions

The Duquesne Incline () is a funicular located near Pittsburgh's South Side neighborhood and scaling Mt. Washington in Pennsylvania, United States. Designed by Samuel Diescher, the incline was completed in 1877 and is 800 feet (244 m) long, 400 feet (122 m) in height, and is inclined at a 30-degree angle. It has an unusual for United States (but standard for Finland, Mongolia and the former-USSR) track gauge of 5 ft (1,524 mm).

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  1. P

    Help with question related to friction on an incline?

    Homework Statement A car with a mass of 560 kg is parked on a hill inclined at 4.5 degrees to the horizontal. a.) What is the force of fricton necessary to hold the car on the slope? b.) If there is ice on the hill and the car is about to slip, what is the coefficient of static...
  2. V

    Work and Energy of falling mass attached to mass with friction on incline.

    Homework Statement [PLAIN]http://rawrspace.com/physics.GIF Homework Equations v=v0+at x=x0+v0t+(1/2)at2 W=\DeltaK=K2-K1 The Attempt at a Solution For the first part of this problem I attempted it this way which I think is completely wrong. I rearranged the first two equations...
  3. E

    Gravity's Work on Mass Sliding Down Incline at 35 Degrees

    Homework Statement A 50 kg mass is released from rest and begins to slide from the top of the incline (2.0 m). Th coefficient of kinetic friction between the mass and the inclines u how much work does gravity do on the mass by the time it slides to the bottom of the ramp if the angle theta...
  4. H

    How Far Will a Bundle Slide Up an Incline with Friction?

    A 4.0 kg bundle starts up a 30° incline with 128 J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.30?So, I began finding the Normal N=W(y)=4cos30=3.46 Then found friction f=uN f=.3*3.46=1.04 So E=E K=Ug + Q K=mgh + fd K=mg(dsin30)+fd...
  5. D

    How Do You Calculate Frictional Force on an Inclined Plane?

    Homework Statement A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are µs = 0.67 and µk = 0.57, respectively. The acceleration of gravity is 9.8 m/s^2. What is the frictional force acting on the 42 kg mass? Answer in units of N...
  6. G

    Crate pulled up incline, kinetic energy and speed; picture included

    Homework Statement A crate is pulled by a force (parallel to the incline) up a rough incline. The crate has an initial speed shown in the figure below. The crate is pulled a distance of 5.94 m on the incline by a 150 N force. The acceleration of gravity is 9.8 m/s2 ...
  7. G

    Acceleration of mass on an incline plane

    Homework Statement A horizontal force of 100 N pushes a 17 kg block up a frictionless incline that makes an angle of 31° with the horizontal. Find the acceleration of the block. Homework Equations F = ma F_g = mg The Attempt at a Solution Cos31 = 100/(component of force along plane)...
  8. D

    Help with block of ice on an incline, and friction

    Homework Statement A 8.80-kg block of ice, released from rest at the top of a 1.03m--long frictionless ramp, slides downhill, reaching a speed of 2.81m/s at the bottom. need to find the angle between the ramp and horizontal, and what would be the speed of the ice at the bottom if the...
  9. G

    Solving Object's Velocity at Bottom of Frictionless Incline

    Homework Statement An object rests at the top of a frictionless incline with length L and angle θo. At the moment the object is released the angle begins to decrease at a constant rate w. Thus the angle as a function of time is θ(t)= θo-wt. Value of w is defined to be the rate such that at...
  10. R

    Tension with circular motion on incline

    Homework Statement An energetic father stands at the summit of a conical hill as he spins his 23 child around on a 5.6 cart with a 2.3--long rope. The sides of the hill are inclined at 23 . He keeps the rope parallel to the ground, and friction is negligible. What is the tension in the rope...
  11. P

    What is the angle at which an object on an incline plane begins to slide?

    [b]1. The problem statement, all variables and g object on an incline plane has a mass of 10 kgs and the coefficient of static friction is 0.35 at what angle does the object begin to slide. Homework Equations Fnet=ma Ff=sin(theta)(mg) The Attempt at a Solution I don't come close...
  12. J

    Potential and Kinetic Energy: Down an incline with spring

    Homework Statement A 4.1 kg block starts at rest and slides a distance d down a frictionless 26.0 deg incline, where it runs into a spring. The block slides an additional 18.0 cm before it is brought to rest momentarily by compressing the spring, whose spring constant is 428 N/m ...
  13. V

    Find the largest mass that can sit on an incline without accelerating

    1. Homework Statement A mass M1 = 10 kg rests on an incline of angle θ = 60deg. Find the largest M2 such that no accelerations occur. a picture of the problem: http://s861.photobucket.com/albums/ab174/alkaline262/?action=view&current=prob14.jpg 2. Homework Equations f=ma 3. The Attempt at a...
  14. K

    How Much Can the Sled Weigh If a Girl Pulls It Up a Slope Without Slipping?

    Homework Statement A girl of mass mg=47 kg is pulling a sled up a slippery slope. The coefficient of friction between the girl's boots and the slope is µs=0.160; the friction between the sled and the slope is negligible. The girl can pull the sled up the slope with a ≤ amax=0.015 m/s2...
  15. G

    Three blocks, two pulleys, on a incline

    Homework Statement The suspended 2.29 kg mass on the right is moving up, the 1.3 kg mass slides down the ramp, and the suspended 7.7 kg mass on the left is moving down. There is friction between the block and the ramp. The acceleration of gravity is 9.8 m/s2 . The pulleys are massless...
  16. A

    Frictionless pully and incline

    Figure 5-56 shows a box of mass m2 = 1.3 kg on a frictionless plane inclined at angle θ = 34°. It is connected by a cord of negligible mass to a box of mass m1 = 2.7 kg on a horizontal frictionless surface. The pulley is frictionless and massless. (a) If the magnitude of the horizontal force F...
  17. S

    Acceleration at incline with friction

    Homework Statement A block of mass 250 kg is placed at rest onto 5 different inclines. The angle of incline A is 22o, B is at 22o, C is at 22o, D is at 10o, and E is at 10o. The inclines are made of different materials, and have coefficients of friction mkA = 0.3, mkB = 0.4, mkC...
  18. X

    Two blocks on a double incline plane

    Homework Statement See attachment Homework Equations F=MA T=MA? The Attempt at a Solution M1: N1=M1gSin(32) T=M1gCos(32) Now does this work?: T=MA M1A=M1gCos(32) and that would give me the acceleration for the X-axis and i could do the same for the Y-axis and get the...
  19. B

    Finding the mass of a block on an incline attached to a pulley

    Homework Statement The two mass system shown below has the same coefficient of kinetic friction on both the horizontal and inclined surfaces. When the system released from rest, both blocks quickly reach a constant acceleration of 2.00 m/s^2. M2=5.00 kg (on horizontal. Find the mass M1 of the...
  20. JJBladester

    Moving blocks on an incline - relative motion

    Homework Statement Block A starts moving downward to the left at a constant acceleration = 80mm/s2. At the same time block B moves along block A to the right at an acceleration of 120mm/s2 relative to block A. a) Determine the acceleration of block B. Answer: aB=52.5m/s2 b) Determine the...
  21. I

    End position of braking car on an icy incline

    Homework Statement A car with a speed of 40.0 km/h approaches the bottom of an icy hill. The hill has an angle of inclination of 10.5 degrees. The driver applies the brakes, which makes the car skid up the hill. If the coefficient of kinetic friction between the ice and the tires if 0.153...
  22. J

    Object on an incline with friction

    An object of mass 3 kg lies on a rough plane inclined at 45 degree to the horizontal. The coefficient of friction is 0.2 and a force of 10 N acts at 30 degree to the object. Calculate the friction. According to the booklet the answer is 3.24 N My work F = u R Normal reaction = 10 sin...
  23. I

    Roller coaster velocity at the bottom of an incline

    Homework Statement A roller coaster starts its descent with an initial speed of 4 m/s. it moves through a distance of 135 ft (41.1 m) along an incline that makes an angle of 40 degrees with the horizontal. Neglect friction and find its speed at the bottom of the incline. Homework Equations...
  24. Z

    Different round objects of same mass on an incline

    Homework Statement A solid sphere, a hollow sphere and a disc, all having the same mass and radius are placed at the top on an incline and released. The friction coefficients between objects and the incline are same and not sufficient to allow pure rolling. Least time will be taken in reaching...
  25. J

    Real life problem - pushing object up incline plane

    This is not a homework question but rather a real life problem I need to work through. Sorry if I have used incorrect terms but I have not done any physics in 10 years and have forgotten everything so I was hoping someone would be able to help. Homework Statement How much effort would it take...
  26. G

    Solving a 2.2kg Block Incline Problem

    Homework Statement A 2.2kg block slides down a planar incline. The incline makes an angle of thirty degrees with the horizontal and the block starts 10 m above ground. The coefficient of friction between the block and the incline is .1. The block reaches the bottom of the incline and then...
  27. D

    Angle of Incline Calculation with Coefficient of Friction

    Hey would someone mind taking a crack at this one? I know the final answer is 28.73, however I can't figure out the equation to get it. On a certain inclined plane, a body weighs 50N and requires a force of 35N to pull it up the incline. If the coefficient of friction is 0.25, find the angle...
  28. A

    Finding the accel of two objects on an incline.

    Homework Statement Two objects are connected via a light string that passes over a frictionless pulley. Assuming the incline is frictionless, m1=2 Kg m2=6 Kg and \theta=55. Find the acceleration of the objects and the tension in string. This porblem is set up with m1 hanging vertically...
  29. S

    Forces - distance of a skier on an incline

    Homework Statement A skier on a slope inclined at 4.7 degrees to the horizontal pushes on ski poles and starts down the slope. The initial speed is 2.7 m/s. The coefficient of kinetic friction between skis and snow is 0.11. Determine how far the skier will slide before coming to rest...
  30. K

    Mass-spring system on an incline

    A spring is mounted at an angle of theta = 39degrees on a frictionless incline as illustrated in the figure below. The spring is compressed to 15 cm where it is allowed to propel a mass of 4.9 kg up the incline. (a) If the spring constant is 580 N/m, how fast is the mass moving when leaves...
  31. M

    Solve Incline Question: 100N Sled, Coefficient of Friction 0.2

    Homework Statement A boy drags a 100N sled up a 20degree slope at constant velocity. If the coefficient of friction between sled and hill is 0.2, what force must he exert at an angle of 35 degrees with respect to the hill? Homework Equations What does 'respect to the hill' mean...
  32. J

    Velocity of object sliding down incline, given gravity and the incline's height

    Homework Statement a cart slides down an iced incline that is 159m high. initial speed is 0m/s acceleration of gravity is 9.8 m/s^2 neglect friction, air resistance determine carts speed at the bottom of the hill Homework Equations v = u + at, but no time is mentioned v^2 = u^2 + 2ah...
  33. W

    Solving Bobbin on Incline: Angle of Tilt θ

    Homework Statement A bobbin of M = 3 kg consists of a central cylinder of radius r = 5 cm and two end plates of radius R = 6 cm. It is placed on a slotted incline on which it will roll but not slip, and a mass m = 4.5 kg is suspended from a cord wound around the bobbin. It is observed that...
  34. N

    How Is Work Calculated When Pulling a Wagon Up an Incline?

    A person pulls a wagon up an incline that makes an angled of 30 deg with the horizontal with a force on the handle of 30 pounds which makes an angel of 30 deg with the incline find the work done in pulling the wagon 100 ft 20cos30 will be a force along the surface of the incline and since...
  35. M

    Find distance before rest given length and angle of incline

    Homework Statement A skier starts from rest at the top of a hill that is inclined at 9.1° with the horizontal. The hillside is 250 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged...
  36. M

    Rigid object under net torque: 2 blocks, pulley, on incline

    Homework Statement A block with mass m1=2.00kg is on a flat surface and a block of mass m2=6.00kg is on an incline and they are connected by a massless string over a pulley in the shape of a solid disk with a radius R=0.250m and mass M=10.0kg. The angle of the incline is \Theta=30o and the...
  37. J

    Object pulled up an incline with friction

    Homework Statement A 70 kg object is being pulled up a slope of 30 degrees such that the rope is parallel to the slope. the velocity is constant. however, there is a coefficient of friction is 0.3 The Attempt at a Solution I know without friction its, something like...
  38. D

    Need help with a projectile up an incline problem

    Homework Statement A projectile is launched at an angle 45degrees with respect to the horizontal and up a hill that is inclined 20degrees to the horizontal. The initial speed of the projectile is 50m/s. Neglect air resistance. a)what is maximum height? - I found 63.8m which is correct b)...
  39. D

    Truck Incline FBD: Check My Answers and Identify External Forces

    Homework Statement I want to know if I drew this free body diagram correctly. Information about the problem: 1:The truck has a load which is the black park as it goes up the incline. It doesn't have a load when it goes down the hill. 2:The truck is rear wheel driven. 3:The truck has...
  40. N

    Coefficient of Friction / Speed on incline.

    Homework Statement A waterslide ride consists of a straight guided ramp, at an angle theta (to the horizontal plane), with a transition to a short horizontal section at the bottom of the slide (1m long), just above the surface of a splace pool of length L. Patrons queue on a platform of...
  41. M

    Rolling motion of a cylinder down an incline

    Homework Statement Assuming smooth rolling with no resistance, it can be shown that the acceleration of a solid cylinder down an incline is equal to: a = 2/3 g sin(theta) The goal of my lab is to test the validity of the above equation Homework Equations The Attempt at a...
  42. P

    Force of object pulled up incline

    Homework Statement A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 22° above the horizontal. If the normal force exerted on the suitcase is 170 N, what is the force F applied to the handle? Homework Equations The Attempt at a Solution...
  43. R

    Sphere rolling down an incline rotational kinetic energy

    A small diameter (2.00 mm), solid steel ball rolls from rest, without slipping, down a track and into a loop-the-loop of 1.50 meters diameter. Between the starting point on the track and the top of the loop the ball converts 10.0% of its initial mechanical energy into other forms of energy. From...
  44. P

    How Does Incline Angle and Friction Affect Block and Flywheel Dynamics?

    Homework Statement A block with mass m = 5.00 kg slides down a surface inclined 36.9 to the horizontal. The coefficient of kinetic friction is 0.25. A string attached to the block is wrapped around a flywheel has mass 25.0 kg and moment of inertia 0.500 kgm2 with respect to the axis of...
  45. B

    Pully/block system on an incline

    Homework Statement A block of mass m = 10 Kg is attached to a cable that wraps around the pulley. The pulley is pivoted at the center, and the angle of incline is θ = 30°. The radius of the pulley is R = 0.5 m and its moment of inertia is I = 0.4 Kgm2. The block is released from rest and...
  46. J

    Acceleration of an object rollling down a incline.

    Homework Statement A cylinder of mass M and radius R rolls(without slipping) down an inclined plane whose incline angle with the horizontal is Θ. Determine the acceleration of the cylinder's venter of mass.(Derive the formula) Homework Equations I have the answer, but I just don't...
  47. H

    Vibrations and Waves: Mass on Incline problem

    Homework Statement A spring, of negligible mass and which obeys Hooke's Law, supports a mass M on an incline which has negligible friction. The figure below shows the system with mass M in its equilibrium position. The spring is attached to a fixed support at P. The spring in its relaxed state...
  48. S

    Optimizing Water Displacement on an Incline

    I would like to know if its possible to move water from a filled rectangular tank to another tank sliding down an incline using force generated due to the weight of the empty tank rolling down the slope. Attached is a figure depicting the scenario. I would like to know what should be the...
  49. R

    The Drag Force at Terminal Velocity

    Homework Statement [PLAIN]http://img237.imageshack.us/img237/6677/incline.gif A snow sled with a child secured safely to it has a total mass of 83.0 kg. It is lowered at a constant speed of 1.9 ms−1 down a slope of angle 41.0° with respect to the horizontal (as shown above) for a...
  50. S

    Inclined Surface: Velocity and angle of incline

    Homework Statement How is angle of incline related to the acceleration of the car moving down it? I know how to find both the velocity and acceleration of a car moving down a track using the suvat equations. I don't understand the relationship between angle of incline, velocity and...
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