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).
[Heres the Problem...
http://i14.photobucket.com/albums/a322/guitaristx/lk.jpg
Heres my work so far...
http://i14.photobucket.com/albums/a322/guitaristx/Scan10026.jpg
Im checking to see if I am headed in the correct direction...
Homework Statement
A hollow spherical shell with mass 2.50 kg rolls without slipping down a slope that makes an angle of 32.0 degrees with the horizontal.
a. Find the magnitude of the acceleration a_c of the center of mass of the spherical shell.
b. Find the magnitude of the frictional...
Homework Statement
A block with mass m = 5.00 kg slides down a surface inclined 36.9 degrees to the horizontal (the figure View Figure ). The coefficient of kinetic friction is 0.23. A string attached to the block is wrapped around a flywheel on a fixed axis at O. The flywheel has mass 28.0...
Hi, I'm a first year engineering student and I'm having a hard time understanding this concept. How do you calculate acceleration an an incline plane? Currently I'm working on a problem that has a truck with a mass of 2430 kg traveling at a velocity of 85 mph up a ramp inclined from the x-axis...
Is the acceleration of an object going down an inclined surface directly proportional to the angle of the inclined surface? (is there a linear relationship between the angle and acceleration?)
What are the factors that affect the change of the acceleration? (is it mass and friction?)
Is...
Homework Statement
A cylinder (R= 0.11 m, I (center of mass)= 0.015427 kg*m2, and M= 1.48 kg) starts from rest and rolls without slipping down a plane with an angle of inclination of Theta= 26.3 deg. Find the time it takes it to travel 1.51 m along the incline.The attempt at a solution...
Homework Statement
A hollow cylinder (hoop) is rolling on a horizontal surface at speed v = 3.8 m/s when it reaches a 14^\circ incline. how far up the incline will it go
Homework Equations
mgH = .5mv^2 + .5Iw^2
v=sqrt(10/7 *g * H)
The Attempt at a Solution
i need to solve for...
Having a problem with a gravity cart delivery system.
The cart has (4) casters, (2) rigid & (2) swivel. They load the cart in with the swivel casters leading. The rack slopes down say 10-15 degrees (don't know the angle yet, will check today).
The problem is the cart rubs on the side guide...
Car travels up 10% grade at constant speed of 35 m/s. The car is 2000 kg and requires a total force of 600N on a regular, flat incline. What is the power required to get up the grade?
P=FxV
%10 percent incline = arctan(.1)... theta = 5.7, so the displacement would be about...
Homework Statement
object with force of 80N at 170 degrees from x-axis...
moved of a distance of 2.2m at an angle of 10 degrees
problem does not state exactly 10 degrees in respect to what...Homework Equations
net force is equal to force applied in the horizontal direction (force times cosine...
I have thought and thought about this problem for years and made no progress.
First off, the moving block on an incline plane has a simple solution using Newton's laws for both friction and no friction cases. But once the incline plane itself is allowed to move, on a frictionless surface...
Homework Statement
A crate is pulled up a rough incline. The pulling force is parallel to the incline. The crate is pulled a distance of 7.51m.
The acceleration of gravity is 9.8 m/s^2.
Given:
d = 7.51
theta = 32
m = 10.1
g = 9.8
coefficient of friction = .178
v = 1.77
1...
[SOLVED] Distance up and incline plane
A block with mass m = 11.5 kg slides down an inclined plane of slope angle 24.5 o with a constant velocity. It is then projected up the same plane with an initial speed 3.75 m/s. How far up the incline will the block move before coming to rest...
Homework Statement
In Fig, a block of mass m = 19 kg is released from rest on a frictionless incline of angle θ = 34°. Below the block is a spring that can be compressed 4.5 cm by a force of 210 N. The block momentarily stops when it compresses the spring by 3.6 cm. (a) How far does the block...
Homework Statement
A small block of mass m rests on the sloping side of a triangular block of mass M which itself rests on a horizontal table as shown in the attached figure. Assuming all surfaces are frictionless, determine the force F that must be applied to M so that m remains in a fixed...
Homework Statement
Two boxes, with masses 12.5 kg and 25.5 kg, are connected by a taut string on a surface that is inclined at 25 degrees with respect to the horizontal. If the coefficients of kinetic friction between the boxes and the table are 0.100 and 0.150 respectively and the 25.5 kg box...
Homework Statement
A block with a mass of 8.7kg slides down a hill with an angle of 27.4 degrees at an initial velocity of 1.66m/s. The friction uk between the block and hill is 0.62. What is the distance the block slides down the hill?
I solved the equation using components and kinetics...
Homework Statement
A ball rolls off an incline plane on top of a 1m high table and strikes the floor 62.5cm from the edge of the table. What was the velocity of the ball just as it left the incline plane?
The incline is given as 30 degrees.
I've put my frame of reference at the point where...
Homework Statement
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.48 m/s. The pulling force is 104 N parallel to the incline, which makes an angle of 20.1° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.05 m.
(a)...
Homework Statement
a box given an initial speed of 3.0 m/s up a 19.0° inclined track. The mass of the box is 20 kg, and the coefficient of kinetic friction between sled and incline is 0.20. How far up the incline does the box move?
Homework Equations
F=ma, n=63.8N, mukN=12.76
The Attempt at...
Hello, this is a physics problem I worked out an cannot determine what I did wrong.
Attached is the problem and my solution. Any help would be very appreciated.
Thanks.
Homework Statement
Attached
Homework Equations
F = ma, f_k = Mu_k * N, dx = v0t + 1/2at^2
The Attempt at a...
Hello,
I am in a car and accelerating on the horizontal at a rate of say 1mss I wound be subjected to 0.1g acceleration on my back, correct?
However if I accelerate in the same car at the same 1mss up and incline of 45 degrees what would be the g force on my back please? And how do I...
The coefficient of kinetic friction between the block and the incline is 0.29. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction.
That's the question. I'll try to describe the accompanying diagram.:
Basically there's a ramp...
we have to design an entrance ramp for the new megamart. the maximum force customers will exert without complaint is 20N, ignoring friction at what maximum angle should the ramp be built assuming a full 20 kg grocery cart?
i've almost drawn at a blank it just seems like the question is...
[SOLVED] Force at an Incline
A 3.54 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.90 N at an angle theta=16.0o above the horizontal, as shown. What is the speed of the block 6.10 seconds after it starts moving?
Fgravity = (3.54*9.8) = 34.7N...
SOLVED :)
Homework Statement
https://tycho-s.phys.washington.edu/cgi/courses/shell/common/showme.pl?courses/phys114/winter08/homework/04d/2blocks_incline_NWT/5.gif
The figure shows two identical blocks tied together with a string which passes over a pulley at the crest of the inclined...
[SOLVED] Block on an incline
A 11.4-kg block is released from rest on a frictionless track inclined at an angle of 47°. (a) What is the net force on the block after it is released? (b) What is the acceleration of the block? (c) If the block is released from rest, how long will it take for the...
Homework Statement
A baseball is given an initial velocity with magnitude v_{0} at an angle of \phi above the surface of an incline, which is in turn inclined at an angle \theta above the horizontal.
a) Calculate the distance measured along the incline from the launch point to where the...
a block is pushed up a frictionless 30 incline by an applied force
the force F=50 N and the mass = 3 kg
whats the magnitude of the resulting acceleration of the block ?
sol:
-Fcos30=ma
mg+Fsin30=ma
right answer for a=9.4
Homework Statement
A solid sphere of mass 1 kg that moves on a level surface at a speed of 20m/s. It then
ascends am inclined surface with an angle of 30 degrees. Determine:
a) the kinetic energy of the sphere when it is positioned at the base of the inclined surface.
b) the distance...
A sled is pulled 3 meters at constant velocity up a 20 degree incline. the efficiency of this procedure is 42%. Calculate the coefficient of friction between the crate and the incline.
alright I'm completely clueless on this one.
i know that efficiency=output (energy delivered by...
[SOLVED] spring and box on incline
Homework Statement
A 50 kg mass rests atop a 20m high incline. The spring constant of a 10m long spring below is 1000N/m. The 50 kg crate is sent down the incline. Assume all surfaces in this problem are frictionless.
What is the velocity of the crate...
Homework Statement
a vehicle of mass 200kg accelerates from rest up to 40km/h in 15seconds up an incline of 1 in 8. The resistance to motion can be considered to be in two parts, the first being due to friction and constant at 50 N/tonne with the second part being due to air resistance and...
3. A 52.3-kg trunk is pushed 5.95m at constant speed up a 28.0 degree incline by a constant horizontal force. The coefficient of kinetic friction between the trunk and the incline is .19 . Calculate the work done by a) the applied force and b) the force of gravity.
Fy = N - mgcos28 = 0
Fx =...
Homework Statement
Two packing crates of masses m1 = 10.0 kg and m2 = 3.00 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 3.00 kg crate lies on a smooth incline of angle 42.0°. Find the acceleration of the 3.00 kg crate.
Homework...
Homework Statement
If we look at a bowling-ball rolling up an uncline without slipping, I have to find the acceleration of this. I was wondering:
May I choose by myself where to look at the torque? I mean, can I decide by myself whether I look at the center of the ball where the sum of...
Sphere/disk rolling down an incline HELP!
Homework Statement
a ball, or sphere with a radius of R and mass Mis rolling down an incline with a height of H and an angle of \Theta how long does it take to get to the bottom
Homework Equations
Conservation of mechanical energy
Kf +...
Homework Statement
Given the incline plane, see picture, a box is let loose, attached to a spring in a relaxed position, the box moves down 2.75 meters. The variables: incline is at 32 degrees, the friction coefficient is .125 and the mass of the box is 17.4 kg. The length it slides is 2.75...
[SOLVED] vectors acting on a mass on an incline
hey guys! well i have this lab report due tomorrow and there is one part that I'm missing. For the discussion part i have to "draw and label the vectors acting on a mass resting on an incline" you know like mg and FN and all that fun stuff but i...
Homework Statement
Block 1 slides down an slope to hit block 2, which compresses a spring. How much compression does the spring experience? Mass - block 1=10 kg, block 2 = 1 kg, spring constant = 500 N, angle = 35, acceleration due to gravity=9.8
m/s, ukf = 0.1
Homework Equations...
A wheel of radius R = 10.0 cm is mounted on a frictionless horizontal axis. A massless cord is wrapped around the wheel and attached to a 2.00-kg crate that slides on a frictionless surface inclined at an angle of 27.5° with the horizontal. The crate accelerates down the incline at 3.0 m/s2...
Homework Statement
http://img216.imageshack.us/img216/1767/inclineplanevq9.jpg
Homework Equations
F = ma
sohcahtoa
The Attempt at a Solution
The answer to the question is b, but I got a. I used the sine ratio and divided the forces that were acting on mass 1 by the forces acting on...
Homework Statement
A skier of mass 70.0kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him a distance of 60.0m up a 30.0 degree slope (assumed frictionless) at a constant speed of 2.00m/s?
Given:
\Delta r = 60m
\theta = 30^\circ
Mass...
Homework Statement
A 50 g ice cube can slide without friction up and down a 30 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10 cm. The spring constant is 25 N/m. When the ice cube is released, what total distance will it travel up...
Homework Statement
A ball of mass 2.80 kg and radius 0.148 m is released from rest on a plane inclined at an angle θ = 38.0° with respect to the horizontal. How fast is the ball moving (in m/s) after it has rolled a distance d=1.55 m? Assume that the ball rolls without slipping, and that its...
Homework Statement
A ball of mass 2.30 kg and radius 0.142 m is released from rest on a plane inclined at an angle q = 42.0° with respect to the horizontal. How fast is the ball moving (in m/s) after it has rolled a distance d=1.35 m? Assume that the ball rolls without slipping, and that its...
Hey everyone, I'm new here, and just wanted to say hi first. Second, I was wondering if anyone would so kind as to help me with this problem.
Homework Statement
An 80kg skiier has a force of 200N exerted on him down the slope. Now I've already found the acceleration of 2.5m/s^2, however...
Homework Statement
There is a plane inclined 30degree. A box with 4.0kg mass is pushed up the plane with 128J. The kinetic friction between the plane and the box is 0.30. What is the distance will the box traveled until it stops?
Homework Equations
The Attempt at a Solution
Fn=MG...
Homework Statement
A block sits on an inclined plane, which is slowly being raised. The block remains motionless until the angle the plane makes with the horizontal is 23°. At this angle, the block begins to slide down the plane. What is the coefficient of static friction between the plane...
A 2.00 kg block is placed against a spring on a frictionless 30.0° incline (Fig. 8-33). (The block is not attached to the spring.) The spring, whose spring constant is 19.6 N/cm, is compressed 16.0 cm and then released.
(a) What is the elastic potential energy of the compressed spring...