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).
Whats the net force of an object going UP an incline? I don't have an applied force, just the velocity, mass, and coeffieciant of friction. I solved for the Force of friction but how do i solve for Fnet? I don't think its
Fnet = Fg(parralel) - Ffriction cause Fg is still pulling down?
Two identical blocks tied together with a string which passes over a pulley at the crest of the inclined planes, one of which makes an angle q1 = 20° to the horizontal, the other makes the complementary angle q2 = 70°. If there is no friction anywhere, with what acceleration do the blocks move...
The problem is:
We have a 2kg block on a 30 degree incline, with the coefficient of static friction= 0.5. I am supposed to determine the maximum and minimum values of an applied force at 30 degrees to the plane that will keep the block stationary.
My positive x direction is down the ramp...
A 2.0 kg wood block is launched up a wooden ramp that is inclined at a angle. The block's initial speed is 10 m/s . The coefficient of kinetic friction of wood on wood is .200.
So that's the intro... The first question is to get the hight it reachers on the incline and I got that right =...
An inclined plane that makes an angle of 28° to the horizontal is mounted on wheels. A small block of mass m = 1.3 kg rests on the plane, held there by a coefficient of static friction µ = 0.7.
The plane is accelerating to the right. What is the minimum acceleration in order that the block...
There's a block of mass M that's pulled up an incline by a force T. The block starts from rest and is pulled a distance L by the force T. The incline, which is frictionless, makes an angle (a) with respect to the horizontal.
1) Write down the work done by force T.
That would just be W =...
I need help with the following problem:
The block shown in fig 4-48 lies on a smooth plane tilted at an angle 22 degrees to the horizontal. (a)Determine the acceleration of the block as it slides down the plane. (b) If the block starts from rest 9.10m up the plane from its base, what will be...
This is supposed to be a hard question...
A 1900kg car experiences a combinded force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 27m/s. Going up a hill, the car's engine needs to produce 47 hp (1horsepower=745.7 Watts) more power to...
Hi all,
I need help with question
I need to calculate the work done in pushing a mass up an incline a distance d with slope theta, when the coefficient of kinetic friction is 0.1 and the force is directed 1) parallel to the slope, 2) the force is directed at an angle phi to the slope...
There is this question that I feel like it should be easy, but I can't get the right answer. There is a box sitting on a horizontal surface attached to another box that is sitting on a "decline" The horizontal box is bigger than the other one. a horizontal force is applied to the horizontal...
How can I find the velocity of an object at the bottom of a frictionless incline?
m=108kg
Initial Velocity= 4.6m/s
Length of ramp=755m
Incline=downwards at 19.6 degrees
I keep telling myself I'm not unintelligent... But this keeps replying otherwise :yuck:
Need help on this one:
An object is fired up a frictionless ramp at 60 degrees. If the intial velocity is 35m/s, how ong does the object take to return to the starting point?
I figured out the Initial y and x velocities.
What i don't understand is how to use acceleration in this...
The homework problem is confusing me a little bit especially b and c.
I have attached the picture of the incline plane and object.
Based on figure #1, assume the block is sliding down the inclined plane and that there is kinetic friction associated with the block and plane. Label all...
Hello, I've just joined this forum in hopes of finding some help to my physics problems. I usually can find out what to do by myself, but this problem seems to be requiring some advanced concepts...or it maybe is so that I'm just not using my noodle.
A car is sliding down an inclined plane...
A 2.2 kg block is placed against a spring on a frictionless 25o incline (Fig. 8-37). The spring, whose spring constant is 27.6 N/cm , is compressed 27.6 cm and then released.
(a) What is the elastic potential energy of the compressed spring?
(b) What is the change in the gravitational...
Any Hints??
I'm stuck on these 2 problems.. Any hints would be helpful!
1. What is the minimum work needed to push a 950-kg car 810m up along a 9 degree incline? a) ignore friction, b) assume the effective coefficient of a friction retarding the car is .25.
This is what I did, but I don't...
a block is projected up a frictionless inclined plane. the angle of incline is 35 degrees, and the initial velocity is 8.2 ft/s. how far up the plane does the block travel? how long does it take to get there? and what is its speed when it gets back to the bottom?
a block is projected up a frictionless inclined plane. the angle of incline is 35 degrees, and the initial velocity is 8.2 ft/s. how far up the plane does the block travel? how long does it take to get there? and what is its speed when it gets back to the bottom?
This question was a two parter
A car of mass 422 kg travels around a flat,
circular race track of radius 178 m. The co-
efficient of static friction between the wheels
and the track is 0.135.
The acceleration of gravity is 9:8 m=s2 :
What is the maximum speed v that the car
can go...
Please Help, I've asked two physics majors for help now and they can't tell me can anyone be of assistance?
A block with a mass m=16.5 slides down an inclined plane with a slope angle of 32.7 degress with a constant velocity. It is then projected up the same plane with an initial speed of...
Greetings fellow physicists!
I am stuck on a problem, please help.
The situation is a block on a rough incline (trainglular block), the incline itself is on a frictionless table. A horizontal force is applied to the incline. The question is to find the minimum horizontal force needed so that...
A ball is hit at an angle \theta to the horizontal, from the base of a hill \phi degrees in incline. The ball strikes the hill at a horizontal distance x measured from the launch point. Determine the value of \theta that will result in the largest possible value of x .
well i started out...
Here is another problem I'm struggling with: A mass m is sitting on an rough incline of mass M who in turn is resting on a frictionless surface. What minimum force F must be applied to the non-inclined side of the incline to make mass m move up the incline. The coefficient of static friction...
Ball, spring and curved incline -- is this right?
Picture a smooth, level, frictionless surface (A) that leads into a curved incline (B-C). The top of the incline (C) is 0.4 meter above the flat surface. At the start of A is a spring with a spring coefficient of 10, with one end fixed and a...
A 60-kg crate is slid up an inclined ramp 2.0-m long onto a platform 1.0m above the floor level. A 400-N forcem, parallel to the ramp, is needed to slide the crate up the ramp at a constant speed.
a) How much work is done in sliding the crate up the ramp?
b) How much work would be done if...
i'm trying to teach myself how to do this for hours and have come up with very little. here's the problem:
An inclined plan making an angle of 45 degress with the horizontal has a frictionless pulley on its top. A 3-kg block(call it B) on the plane is connected to a freely hanging 4-kg...
Hey all, I have a question. How can I calculate the deceleration of an object that begins to go up an incline of angle X? See there are a lot of problems like this. One of mine for example involves an object entering an incline of 25 degrees at 0.25 m/s, and I need to calculate how far it...
ok I have another problem here. Please help me. Thank you in advance.
A 1.50 kg sled scrapes down a grassy incline where the coefficient of friction is 0.678. The sled moves at a constant speed f 4.50 m/s and it takes 12.5 seconds to travel the entire length of the hill to the bottom...
I've tired everything i can think of, anyone that can be of any help i would appriceate it.
A block with a mass of 5 kg is held in equilibrium on an incline of angle = 30.0° by the horizontal force, F, as shown in Figure 4-31. Find the magnitude of F.
( ) N
Find the normal force exerted...
Test tomorrow an I am sure somthing like this will be on it. What is needed to find out the work done upon a 50.0-kg cylinder that is being pushed up a 3-m high, 6-m long (hypotonuse) ramp?
Question: The record for grass skiing was set blah blah blah. Suppose it took Spinka 6.60 s to reach his top speed after he started from rest down a slope with a 34 degree incline. If the coefficient of friction between the skis and the grass was 0.198, what was the magnitude of Spinka's net...
OK here's the problem: An extremely light drivable car with a mass of only 9.50 kg was built. Suppose that the wheels of the car are locked, so that the car no longer rolls. If the car is pushed up a 30° slope by an applied for of 80.0 N, the net accel. of the car is 1.64 m/s2. What is the...
I was hoping I could get some help on this particular exam review question:
[4] A 3.0kg crate slides down a ramp at a loading dock. The ramp is 1.0m in length and inclined at an angle of 30 degrees. The crate starts from rest at the top of the ramp and experiences a constant frictional...
ok, this is very simple... I think. Unfortunately my physics book is useless.
A brick weighing 24.5N being released from rest on a 1.00M frictionless plane, inclined at an angle of 30 degrees. The brick slides down the incline and strikes a second brick (on a flat frictionless surface)...
Work Done?
If someone has the time and patience could you help me in setting this problem up?
300kg object moves 4.5 meters down a 25 degree incline at a constant speed. It is kept from accelerating by a force pushing back on it. The effective coefficient of friction is .39
I need to...
I'm a high school teacher. I have students competing by racing Lego robots up an incline. I can calculate the force due to friction down the incline and the force of gravity parallel to the plane but am unable to clearly identify the relatioship between these two forces and whether a robot...
The questin is a 5kg box slides down a frictionless plane. The plane makes an angle of 15 degrees with the horizonal and has a length of 2.00 meters.
a) if the boxs starts from rest calculate the acceleration
b) calculate the speed when the box reaches the bottom of the incline
I did draw a...
I have been stuck on this problem for so long... It's seriously driving me insane.
The problem:
An incline plane that makes an angle of 28 degrees to the horizontal is mounted on wheels. A small block of mass m=0.9kg rests on the plane, held there by a coefficient of static friction...
Since the runner's level does not actually change, they are not doing any work against gravity. Their total output wattage -- if it can be measured -- should be the same regardless of inclination.
Yet, running on an inclined treadmill seems more difficult. Is the difference purely in the...