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23 Nov 2019

A box with mass 45 kg is at rest when a force Fa (20N) making an angle of 37o with the inclined inclined plane starts acting on the box. The inclined plane makes an angle of 22o with the horizontal plane. When the box is moving on the inclined lane, there is a friction force Ff of 5N opposing the motion. The box was originally at a height h from the ground (h=4m). Determine the coefficient of kinetic friction.

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Bunny Greenfelder
Bunny GreenfelderLv2
30 Jul 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A block of mass m is initially at rest at the top of an inclined plane, which has a height of 4.2 m and makes an angle  with respect to the horizontal. After sliding down the ramp, the brick is observed to be moving at v = 0.95 m/s at a distance d from the end of the inclined plane. The coefficient of kinetic friction between the block and the plane is , and the coefficient of friction on the horizontal surface is  .

 

1. What is the speed of the block, in meters per second, just after it leaves the inclined plane.

2. Find the distance d in meters.

1. A block is placed on a plane whose angle of inclination is 30˚. The coefficients of static and kinetic friction for the block on the inclined plane are both 0.2. The block
(A) remains stationary on the inclined plane.
(B) accelerates down the inclined plane.
(C) travels down the inclined plane at a constant velocity.
(D) travels up the inclined plane at a constant velocity.
(E) accelerates up the inclined plane.

2. An object with a mass of 5.5 kg is allowed to slide from rest down an inclined plane. The plane makes an angle of 30˚ with the horizontal and is 72 m long. The coefficient of friction between the plane and the object is 0.35. The speed of the object at the bottom of the plane is?

3. A 5-kg object slides down a frictionless surface inclined at an angle of 30˚ from the horizontal. The total distance moved by the object along the plane is 10 meters. The work done on the object by the normal force of the surface is?

4. A mass m = 2.5 kg is sliding along a frictionless table with initial speed v as shown in the figure. It strikes a coiled spring that has a force constant k = 500 N/m and
compresses it a distance x=5.0 cm. The initial speed v of the block was..?



5. The graph shows how the position of a particle depends on time. Which choice is closest to the instantaneous speed of the particle at t = 3s?
(A) 0.40 m/s
(B) 0.67 m/s
(C) 0.75 m/s
(D) 1.50 m/s
(E) 2.22 m/s



6. Calculate the work done by a force, F = 2x i, along the
path (0, 0) -> P1(2, 0) -> P2(2, 2).



this is from my physics homework and I just want to know how toproceed.
A 20kg box is pulled 4.5m up an incline by a rope with a tension of150Nt. The incline makes a 30 degree angle above the horizontal.There is a kinetic friction force of 30Nt.

I need to find the work done by each force on the box
Find the net work on the box
if the box starts from rest, what is the speed of the box aftertraveling 4.5m.

I just did a problem like this but it was on flat ground, with arope pulling up at 36 degrees (and 53 degrees later on). Can theproblem be set up the same way or does the inclined plane nowresult in work in the 4 direction.

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