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).
So here's a pretty straightforward question. Given a cylinder with some specific mass and radius rolling down an inclined plane with a specific angle of inclination, what is the cylinder's acceleration?
I can figure out the answer pretty easily by finding the Lagrangian of the cylinder (I...
Homework Statement
A 2.00-kg package is released on a 53.1 ^\circ incline, 4.00 m from a long spring with force constant 120 N/m that is attached at the bottom of the incline View Figure . The coefficients of friction between the package and the incline are \mu_{s} \;=\; 0.40 and \mu_{k}...
Homework Statement
A 2.00-kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless incline with slope 37 degrees
Homework...
Here is the problem: A block is released from rest on an inclined plane and moves 3.5 m during the next 4.8 s at an angle of 31 degrees. The acceleration of gravity is 9.8 m/s^2. What is the magnitude of the acceleration of the block? what is the coefficient of Kinetic Friction Muk for the...
Hello everybody. I have a rather strange question regarding the rotational motion of a solid object across an incline plane. I wonder if it is possible for a solid object to move upwards the plane without the application of any external force, other than its own weight and the friction with the...
Homework Statement
At a certain part of your drive from home to school, your car (mass m) will coast in neutral at a constant speed of v if there is no wind. Examination of a topographical map shows that for this stretch of straight highway the elevation decreases an amount h for each segment...
Homework Statement
Two objects are connected by a light string that passes over a frictionless pulley, as in Figure P5.26. The incline is frictionless, m1 = 2.00 kg, m2 = 6.00 kg, and = 50.0°.
(?) Find the speed of each object 2.00 s after being released from rest.
m/s
Homework...
Okay, so I've been working on incline plane and then banked curve problems. From the incline plane problems and the definitions in my book I believed that normal force was just the y component of the weight, ie the weight times the cos of the angle of incline and no x component, ie parallel to...
Homework Statement
A cart is rolling down an incline (angle to horizontal is theta). It has two wheels, each wheel has mass m and moment of inertia mR^2/2. The total mass of the cart and the two wheels is M. Using conservation of energy (assuming no friction between cart and axles), show that...
Homework Statement
A 215 N box is placed on an inclined plane that makes a 35.0º angle with the horizontal.
a) Draw a free body diagram which indicates all forces acting on the box.
b) Calculate components of weight force parallel and perpendicular to the plane.
c) If the crate is at...
Hey,
I have been thinking about this problem for a while to no avail. Any input would be greatly appreciated. Thanks!
Homework Statement
A solid sphere of mass M and radius R rolls without slipping down a 30 degree incline (see figure attached).
What is the linear acceleration, a...
http://img207.imageshack.us/img207/5524/untitledll1.png
what I'm looking for is 1. the total energy of the sphere, and 2. the height of the ball after it has traveled up the incline.
i have some questions however. First, i understand that total energy = KE+PE. looking at the solution...
"a ball is rolled up an incline (at an angle x with the horizontal). For the angle x and the ball involved, the acceleration of the ball is 0.25g and directed down the incline. If the ball is released with speed v, determine the distance it moved up the incline before reversing its direction as...
Hi...ok so i just need help to make sure I'm understanding the concepts and my answers are correct. I think i get it but i just want to make sure. Thanks!
A spool of mass m has a string wrapped around its axle, with the
string coming away from the underside of the spool. The spool is on a...
Please check my setups and kindly tell me the correct method of finding the answers if possible.
1) The radius of a 3.0 kg wheel is 6.0 cm. The wheel is released from rest a point A on a 30 degree incline. The wheel rolls without slipping and moves 2.4 m to point B in 1.20 s. The moment of...
An 1kg object is sliding down a 4m high incline which is inclined at 53 degrees. The initial speed is 2m/s. It then slides on a horizontal section 3m long which is at ground level and then slides up an incline plane that is inclined at 37 degrees. All surfaces have a kinetic coefficient of uc =...
Think about 2 objects (one rolling one sliding) down an incline. In terms of energy, see what you came up with and how they differ...be verbose!
All right I know that the rolling object would go down the incline faster and...i'm not sure but I think...the sliding one would gather the most...
An ice cube, p = 917 kg/m^3, is sliding down a 16 degree frictionless incline. The sides of the cube each have a length of .75 m. What pressure does the cube exert on the incline?
P = F / A
= F / .75^3
= F / .42
F = ma
= 917 * a
I am having a problem figuring out the Force...
The five masses below all have the same radius and a cylindrically symmetric mass distribution. They start to roll down an inclined plane, starting from rest, at the same time and from the same height. Give their order of arrival at the bottom.
Icm=684 g*cm2, M = 47g
Icm=373 g*cm2, M =...
A block of mass m = 12 kg is released from rest on a frictionless incline of angle theta = 30 degrees. Below the block is a spring that can be compressed 2.0 cm by a force of 270 N. The block momentarily stops when it compresses the spring by 5.5 cm.
a) How far does the block move down the...
can anyone show exactly how to solve this problem with equations and all?
a cart on wheels with a mass of 250 g has a motor driven propeller with a force P of .3 N, and it moved down an incline of 30 degrees with an acceleration of 3.5 m/s^2.
What is the force of friction ?
determine...
A body of mass 'm' slides down an incline and reaches the bottom with a velocity 'v'. If the same mass were in the form of a ring which rolls down the incline, what would have been the velcity of the ring?
(A)v
(B)\sqrt{2}v
(C)\frac{1}{\sqrt{2}}v
(D)\frac{\sqrt{2}}{\sqrt{5}}v
How...
A person stands at the base of a hill that is a straight incline making an angle x with the horizontal. For a given initial speed v, at what angle y (to the horizontal) should objects be thrown so that the distance d they land up the hill is as large as possible?
I realize that tan x =...
I seem to be specializing in plumb bobs this week:rolleyes:
A box car has a freely hangling plumb bob (from the ceiling). It is accelerating up an incline. which makes an angle b with the horizontal. The plumb bob makes an angle c with the perpendicular to the ceiling. Find the acceleration...
My first post :D
I have an incline of angle (θ) to the horizontal, and a chain of length (l) of a uniform mass (m), I place the chain so that one end is at the bottom of the incline, the entire system is frictionless.
I need to find what the velocity is as the last end leaves the incline, and...
Can someone verify my calculations here? I have a 5kg block on an incline plane 12 degrees down angle. Mu k is .31 and slides a distance of 1.5m down the ramp.
Work gravity=5k(9.8 m/s^2)sin(348)(1.5m)=-15.29J
Work friction=.31(5k(9.8 m/s^2)cos(348)(1.5m)=22.29J
This can't be right, can it?
The situation is as follows:
http://img2.freeimagehosting.net/uploads/a87ac3e9ef.jpg
http://img2.freeimagehosting.net/uploads/a87ac3e9ef.jpg
There is friction, but no friction while in the barrel of the spring gun.
I am suppose to derive an equation to solve for L, using x(c), m, g, theta...
Newton's 2nd law with an incline plane (I think...help0
The 1930 kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1830 kg counterweight up the other side of the hill. The rolling friction of both the cable car...
problem: A ball is allowed to roll from rest down an inclined plane, and the distances are marked every 2.5s. if the second mark is made 1.5m from the starting point, where is the first mark?
where is the fourth mark?
well i made a velocity vs. t chart and the velocity of it is 0.6 then...
problem: A ball is allowed to roll from rest down an inclined plane, and the distances are marked every 2.5s. if the second mark is made 1.5m from the starting point, where is the first mark?
where is the fourth mark?
well i made a velocity vs. t chart and the velocity of it is 0.6 then...
Problem:
Soccer ball released from the top of a smooth incline after 4.58 seconds the ball travels 10 meters 1 second later it has reached the bottom of the incline, the balls acceleration is constant and determine its value
(m/s^2) also need to know the length of the incline
I am posting...
This seems like an easy problem but my answer is incorrect.
Imagine a boxcar traveling up a 9.85 degree slope with constant acceleration a. In the boxcar is a pendulum that hangs 24.05 degree from the perpendicular to the boxcar's ceiling and floor. Find the acceleration.
It seems to me that...
The Question:
A 123 kg chesterfield is pushed up a frictionless ramp at a constant speed by a delivery person.
If the ramp is inclined at 26.9° to the horizontal, what horizontal force must the delivery person apply to the chesterfield...
I have my two expressions for time for (b) and (c) but I'm not sure how to use them to get the angles or values for initial velocity.
(b)t = \frac{2v_i\sin \beta}{g \cos \alpha}
(c)t = \frac{v_i cos \beta}{g \sin \alpha}
"Two boxes, m1=1.0 kg witha coefficient of kinetic friction of 0.10 amd m2=2.0 kg with a coefficient of 0.20, are placed on a plane inclined at 30 degrees. (a) What acceleration does each box experience? (b) If a taut string is connecting the boxes with m2 farther down the slope, what is the...
Two packing crates of masses m1 = 10.0 kg and m2 = 7.00 kg are connected by a light string that passes over a frictionless pulley. The 7.00 kg crate lies on a smooth incline of angle 43.0°. Find the acceleration of the 7.00 kg crate up the incline. Find the tension in the string.
I found the...
Hi. I'm having a dickens of a time coming up with the correct answer for this.
I shall describe the question as it includes an image. There are three blocks altogether, b_1, b_2, b_3, each with a mass m_1, m_2, and m_3, respectively, and the blocks are all connected together by two ropes, T_1...
Here is a question that I am not sure where to start.
A block of mass m1 = 6.07 kg on a frictionless plane inclined at angle = 33.3° is connected by a cord over a massless, frictionless pulley to a second block of mass m2 = 2.46 kg hanging vertically (Fig. 5-54). (a) What is the acceleration...
A cylinder rolling down an incline.Moment of Interia is I
And the cylinders mass is m
Velocity is: v
And cylinder radius: r
Angel on the incline: yhttp://img122.imageshack.us/img122/8756/cylpz9.jpg
How do i calculate the cylinders angular acceleration?
Hey everyone. I'm new to this site and was wondering if u can help me with a work and power problem. :smile:
Question:
A 60kg student runs at a constant velocity up the incline described in the diagram in 4.5s. Calculate the power output of the student.
The diagram was a picture of a...
Problem's exact wording: When we looked at the work done by a force F, up a ramp, we were confused about the role of gravity that acts in the down direction. Investigate what work , if any gravity does and how this influences the applied force up the ramp acting on a mass.
Note on question...
Find the position of the block as a function of time for both cases:
a)friction
b)frictionless
Here're my answers. Please check to see if they're correct. The free body diagram are attached.
https://www.physicsforums.com/attachment.php?attachmentid=7068&stc=1&d=1149476915...
i have a question that pertains to skiing down an incline...i can do everything for it, but i have no idea how to get 11.8 degrees from: theta=sin^-1 (0.204) though. how would i know that 11.8 is the answer?
Hey hows everyone well I'm busting my brain over this problem,
On a level road the stopping distance for a certain car going 80km/hr is 32.0m. What would be the stopping distance for this car when going downhill on a 1:10 grade? A grade of 1:10 means the elevation drops 1.0m for a foward...
Hello. I need some help with the following problem.
There is a cart on an incline and a pulley with a suspended block.
Assuming that (the force of friction)= (mu)(N) symbolically show that the coefficient of rolling friction for the car moving down the incline plane with a constant...
Problem:
An object of mass 2.0kg starts from rest and slides down an inclined plane 69cm long in 0.90s. What net force is acting on the object along the incline?
Now, I used what I was given and plugged it in the equation:
deltaX=1/2at^2 + V0t
I come up with acceleration = .0552...
In Fig. 8-49, a block slides down an incline. As it moves from point A to point B, which are 7.2 m apart, force acts on the block, with magnitude 4.4 N and directed down the incline. The magnitude of the frictional force acting on the block is 5.5 N. If the kinetic energy of the block increases...
I'm trying to write a 2-D snowboarding game. I've forgotten my simple physics from college. Anyway, the problem is...
Say you have a snowboarder falling straight down at velocity V and being accelerated by Gravity G. Say snowboarder then lands on a slope of Angle 45 degrees. I want to...
Okay, I got another problem for you guys that I have been trying to figure out. Here first is the diagram:
I have been experimenting with different weights of balls and different weights of cars, also different ramp lengths. 5 balls are supposed to be used. Nothing seems to work at...
a 1360.7 kg car has an engine which can deliver 59,680 watts to the rear wheels. what is the max. velocity at which the car can climb a 15-degree hill?
i have no idea how to solve this. immediate help would be GREATLY appreciated!
the work i have done was setting up a triangle with the...