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).
Homework Statement
A small block of mass .5kg sits on a large block of mass 5kg as shown. The coefficient of static friction between the blocks is .6, but between the large block and the table there is no friction. What horizontal force will keep the small block from slipping down the incline...
Homework Statement
A wheel of radius R = 30.0 cm is mounted on a frictionless horizontal axis. A massless cord is wrapped around the wheel and attached to a 4.75-kg crate that slides on a frictionless surface inclined at an angle of 25.0° with the horizontal. The crate accelerates down the...
1.
A spring with a spring-constant 3.6 N/cm is compressed 39 cm and released. The 9 kg mass skids down the frictional incline of height 36 cm and inclined at a 20◦ angle. The acceleration of gravity is 9.8 m/s^2. The path is frictionless except for a distance of 0.6 m along the incline which...
I need to find the coefficient of friction and the angle of an incline with only knowing a distance of 18.0 meters and a time of 10.0 seconds. I have absolutely no idea where to begin because my teacher never taught us how to do such equations. if anyone can figure the problem out for me that...
Homework Statement
A block of mass m = 2.00 kg is released from rest at h = 0.300 m from the surface of a table, at the top of a θ = 50.0° incline as shown below. The frictionless incline is fixed on a table of height H = 2.00 m.
http://www.webassign.net/pse/p5-62.gif"
(b) What is the...
Projected Up an Incline A block is projected up a frictionless inclined plane with initial speed v1 = 3.43 m/s. The angle of incline is θ = 32.5°.
(a) How far up the plane does it go?
(b) How long does it take to get there?
(c) What is its speed when it gets back to the bottom...
Homework Statement
There is no friction
Part A) Find the mass of block C so that block B moves up the incline with a constant speed
Part B) fint he mass of block C so that Block B moves up the incline with a constant accleration a = g/2
Homework Equations
The Attempt at a...
Homework Statement
A ball of mass 2.80 kg and radius 0.153 m is released from rest on a plane inclined at an angle θ = 41.0° with respect to the horizontal. How fast is the ball moving (in m/s) after it has rolled a distance d=1.60 m? Assume that the ball rolls without slipping, and that...
Homework Statement
A box of textbooks of mass 26.0 kg rests on a loading ramp that makes an angle \alpha with the horizontal. The coefficient of kinetic friction is 0.240 and the coefficient of static friction is 0.360.
As the angle \alpha is increased, find the minimum angle at which the...
Homework Statement
A block lies on a plane raised an angle theta from the horizontal. Three forces act upon the block: F_w_vec, the force of gravity; F_n_vec, the normal force; and F_f_vec, the force of friction. The coefficient of friction is large enough to prevent the block from sliding ...
Frictionless incline plane homework help!
Homework Statement
An object is on a frictionless inclined plane. The plane is inclined at an angle of 78.0 degrees with the horizontal. Using the accerlation due gravity from your reference table. What is the magnitude of object's acceleration...
Homework Statement
Flat weights on a picture are connected by a light rope by a light pulley. How much at most (at least) does mass m2 have to be to balance the pulley, if mass m1 = 1 kg. With how much acceleration do the weights move, if the mass m2 of the weight is replaced with a twice...
1. A 10 kg box on a level surface is attached by a weightless, unstretchable rope to a 7.0 kg box which rest on a 30 degree incline. Find the rate of acceleration and the tension in the rope if... a) there is no friction ... b) coefficient of friction is 0.10 for both boxes
2. F_net...
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 incline. The coefficient of kinetic friction betwen the block and incline is .436
i need to find the work done by the force of gravity, work done by the friction force between block and incline and the work done by the normal...
Homework Statement
A car of weight 1920 N operating at a rate of
107 kW develops a maximum speed of 41 m/s
on a level, horizontal road.
Assuming that the resistive force (due to
friction and air resistance) remains constant,
what is the car’s maximum speed on an incline
of 1 in 20...
Homework Statement
In a physics lab, a cube slides down a frictionless incline as shown in the figure , and elastically strikes another cube at the bottom that is only 1/6 its mass. If the incline is 30 cm high and the table is 90 cm off the floor, where does each cube land?
Homework...
Problem: Block 1 is 7kg and is resting on a table with friction. Block 2.5kg is connected by a massless cord and is hanging over the side of the table. ( assume there is no friction on the cord where it goes over the side of the table.) The two masses are stationary but on the verge of...
Homework Statement
A 5.79KG block is held in equilibrium on an incline by the horizontal force F, as shown in the figure. Determine the magnitude of F. Answer in units N. The figure is in the attachment, problem 008.
Homework Equations
SigmaF=0
Fgx=mg(SinTheta)
Ffr(force of...
Homework Statement
A block of mass 3.7 kg on a frictionless plane inclined at an angle of 30 degrees is connected by a cord over a massless, frictionless pulley to a second block of mass 2.3 kg. What are the acceleration of the blocks? The direction of acceleration of the hanging block and...
A block is projected up a frictionless inclined plane with initial speed of 3.50 m/s. The angle of incline is 32 degrees. How far up the planes does the block go? How long does it take to get there? What is its speed when it gets back to the bottom.
\vec{F}_{net} = \Sigma \vec{F} = m...
Homework Statement
Calculate the force needed to pull a mass of 20 kg at a uniform slow speed up a plane inclined at an angle of 30 with the horizontal if the coefficient of kinetic friction is 0.20.
Homework Equations
WN= w cos \vartheta
WT= w sin \vartheta
\mus= tan\vartheta
The...
Homework Statement
A crate of mass 27 kg is pushed up a ramp by a person, as shown in the figure below. Assume the coefficient of kinetic friction between the crate and the ramp is .24. Calculate the work done by the person in pushing the crate a distance of 30 m as measured along the ramp...
Homework Statement
A block with mass m = 5.0 kg slides down an inclined plane of slope angle 36.5o with a constant velocity. It is then projected up the same plane with an initial speed 1.05 m/s. How far up the incline will the block move before coming to rest?
The Attempt at a Solution...
Urgent help with physics incline problem!
A block of mass m is on an inclined ramp. The coefficient of static friction between the block and the ramp is µs. There is also a wall on the ramp situated below the block (see diagram).
http://img15.imageshack.us/img15/6056/image13pj.jpg
a)...
Homework Statement
Supposed the incline is frictionless for the system. The angle of inclination is 28 degrees, the spring constant is 692 N / m and the mass of the block is 4.95 kg. The block is released from rest with the spring initially unstretched. The acceleration of gravity is 9.8 m/s2...
Ok, so in the red box it says that the tension is obtained from the horizontal dimension. This seems very wrong to me. Could someone explain this to me? Isn't there tension in the vertical dimension?
Homework Statement
http://img27.imageshack.us/img27/9276/inclineplanesolution.jpg
A 3kg block starts from rest at the top of a 30degree incline and slides a distance of 2m down the incline in 1.5s find the magnitude of the acceleration.
I have always though to find the acceleration you can just use x/(t*t) but i use this formula but i couldn't get the same as the book. is...
Homework Statement
Show that the acceleration of a solid cylinder rolling down an incline that makes an angle (theta) with the horizontal is given by the equation:
a=2/3 g sin(theta)
Homework Equations
Using the conservation of mechanical energy:
1/2 Mv2 + 1/2 I w2 + Mgh = 1/2Mv2 + 1/2...
Homework Statement
An object is released (from rest) at the top of an inclined plane. After time t, the object has moved a distance d down an incline. What is its acceleration
Homework Equations
There is some stuff written in regards to this question about using only time and distance...
Homework Statement
A string through an ideal pulley connects two blocks, one (mass=2m) is on an inclined plane with angle theta to horizontal and coefficient of kinetic friction mu. The other block (mass=m) hangs off the pulley on the high side of the inclined plane.
(looks like this, except...
Homework Statement
Interesing...
A spring (k=80n/m ) has an equilibrium length of 1.00m . The spring is compressed to a length of 0.50m and a mass of 2.1kg is placed at its free end on a frictionless slope which makes an angle of 41 degrees with respect to the horizontal. The spring is...
Homework Statement There are two ramps back to back one with a 4 degree incline and the other with a 15 degree incline the mass on the 4 degree is 4 lbs and the other is 24 lbs the 4 lbs mass has a coeffient of .2 and the 24 lbs mass has a coeffient of .4 the two masses have a rope connecting...
Homework Statement
A sphere of radius r_0 = 24.0 cm and mass m = 1.20{\rm{ kg}} starts from rest and rolls without slipping down a 37.0^\circ incline that is 15.0 m long.
Calculate its translational speed when it reaches the bottom.
Homework Equations
ke=1/2mv^2
pe=mgh
The Attempt...
Homework Statement
A block with a mass of m = 2.29 kg is at rest on an incline. The angle of the incline is θ = 15.9° with respect to the horizontal. The coefficient of static friction between the object and the incline is μs = 0.579, the coefficient of kinetic friction is μk = 0.389...
A spring with a spring-constant 3.4 N/cm
is compressed 27 cm and released. The 9 kg
mass skids down the frictional incline of height
13 cm and inclined at a 17◦ angle.
The acceleration of gravity is 9.8 m/s2 .
The path is frictionless except for a dis-
tance of 0.5 m along the incline...
Homework Statement
A physics student playing with an air hockey table (a frictionless surface) finds that if she gives the puck a velocity of 3.79 m/s along the length ( 1.84 m) of the table at one end, by the time it has reached the other end the puck has drifted a distance 2.47 cm to the...
A 44.9-kg seal at an amusement park slides from rest down a ramp into the pool below. The top of the ramp is 1.80 m higher than the surface of the water and the ramp is inclined at an angle of 33.9° above the horizontal. If the seal reaches the water with a speed of 4.51 m/s, what is the work...
Hello:
Can someone help with the following:
A 2.0 kg box on a frictionless incline of angle theta = 40 is connected by a cord that runs over a pulley to a light spring of spring constant k = 120N/m. The box is released from rest when the spring is unstretched. Assume pulley is massless and...
Homework Statement
The question asks, At what angle would the straight need to be inclined at in order for the acceleration of the pod from B to C to be 0m/s^2?
and if the straight was inclined at 3 degrees calculate the final velocity
the coefficient of friction is 0.17 the mass is 6000kg the...
Homework Statement
A ball is thrown with initial speed V up an inclined plane. The plane is inclined at an angle \phi above the horizontal, and the ball's velocity is at an angle \theta above the plane.
Show that the ball lands a distance R = \frac{ 2V^2 \sin{\theta} \cos{ ( \theta +...
Homework Statement
A projectile is fired up an incline (incline angle φ) with an initial speed vi at an angle θi with respect to the horizontal (θi > φ). (a.) Show that the projectile travels a distance d up the incline, where
d = 2*vi^2*cosθi*sin(θi-φ) / g*cos(φ)^2
(b.) For what value...
The question and my work can be seen in the image below:
http://img145.imageshack.us/img145/550/scan0001fgu.jpg
The problem is that I am getting around 1 for acceleration, while the answer is 0.77.
What am I doing wrong?
Homework Statement
I need to come up with a general formula that a vehicle with given mass(m), friction coefficient(u), acceleration force(f), and slope(theta), return the amount of acceleration on the vehicle.
Homework Equations
max acceleration on an incline = -mgsin(theta) +...
Homework Statement
Starting from rest, a 5 kg block slides 2.5 m down a rough 30 degree incline. The coefficient of kinetic friction between the block and the incline is 0.436. The acceleration of gravity is 9.8 m/s2.
Find the work done by the force of gravity.
Find the work done by...
Homework Statement
A box is given an initial velocity of 5m/s up a smooth 20 incline surface . The distance the box travel before coming to rest is?
Homework Equations
I can't solve it correctly , I can't get the idea of this question
The Attempt at a Solution
x= ?
vi=5
v=0...
How do i solve this? here's how far I've gotten
suppose i have x[q], y[q]=S, the surface of a hill
dy/dx=(dy/dt)/(dx/dt)
atan(dy/dx)= the angle of incline at a location on the hill
-GM*cos(pi/2-atan(dy/dx))=the tangeantal component of acceleration
im ignoring the perpendicular...
Homework Statement
A skier is gliding along at 3.12 m/s on horizontal, frictionless snow. He suddenly starts down a 16° incline. His speed at the bottom is 17.89 m/s.
What is the length of the incline?
Homework Equations
Not sure how to start this and formula to be used.
The...
Homework Statement
A block (starting from rest) with mass m = 4.5 kg slides down a frictionless incline a distance of d = 3m and then slides across a horizontal floor with friction (the coefficient of friction is Fk = 0.52). The speed of the block at the bottom of the incline is v1 = 7m/s...
Galileo's Incline plane... Help for SAC.
Hey everyone i am new here so excuse me if i confuse you all.
I am currently undertaking Galileo's incline plane for my yr.12 assessment and i am a little lost with what i am trying to prove...
the data i collected is as follows.
- The volume of the...
Homework Statement
A uniform solid sphere rolls down an incline without slipping. If the linear acceleration of the center of mass of the sphere is 0.22g, then what is the angle the incline makes with the horizontal?
Homework Equations
a=gsin(theta)
The Attempt at a Solution
The...