Phys

posted by .

A stationary 50 kg circular object (r0=.25m) is on a 30 degree incline. The coefficient of rolling friction between the block and the incline is 0.05. If it moves for 3 seconds, what is the angular displacement of the object at this time?

  • Phys -

    It depends upon what type of circular object it us. Is it a disc, a sphere, a spherical shell or a wheel with most of mass on the outer rim? Why are they asking for angular displacment rather than linear motion?

    Is the object rolling down the incline, starting from zero speed?

    The rolling friction will cause a motion-opposing force of M g cos 30 * 0.05 = 21.2 N

    The net accelerating force is
    F = M g sin 30 - 21.2 N = 224 N

    The moment of inertia of the object needs to be taken into account when predicting the motion

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A 50 kg block is on a 30 degree incline. The coefficient of friction between the block and the incline 0.05. If it is given an initial velocity of 10 m/s up the incline, how far will it travel until it stops?
  2. PHYSICS

    A 50 kg block is on a 30 degree incline. The coefficient of friction between the block and the incline 0.05. If it is given an initial velocity of 10 m/s up the incline, how far will it travel until it stops?
  3. Physics - Rotational Motion

    (#1.) A top starting from 40 rad/s takes 200 rad to stop. What is its rotational acceleration?
  4. Physics - Rotational Motion

    (#1.) A top starting from 40 rad/s takes 200 rad to stop. What is its rotational acceleration?
  5. Physics

    A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12 m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, …
  6. Physics please help

    Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline …
  7. Physics

    Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline …
  8. physics

    A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12 m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, …
  9. Physics

    A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, µk, …
  10. Physics

    An 8 kg block is shot up an incline of 300with an initial speed of 2.8 m/s.  How far up the incline will the block travel if the coefficient of friction between it and the incline is 0.18?

More Similar Questions