If you run the simulation a few times, you should see that for this particular pair of block and disc the block's position has the same numerical value as the disc's angular position, and the block's velocity has the same numerical value as the disc's angular velocity. Which of the following pairs of quantities must also have the same numerical values for the block and disc (assuming we use standard meter-kilogram-second units) ? Select all that apply.

a. The work done by the force on the block and the work done by the torque on the disc.

b. The acceleration of the block and the angular acceleration of the disc.

c. The mass of the block and the mass of the disc.

d. The translational kinetic energy of the block and the rotational kinetic energy of the disc.

e. The momentum of the block and the angular momentum of the disc

Question

Physics

Fabian Mitchell

22 September, 10:46

If you run the simulation a few times, you should see that for this particular pair of block and disc the block's position has the same numerical value as the disc's angular position, and the block's velocity has the same numerical value as the disc's angular velocity. Which of the following pairs of quantities must also have the same numerical values for the block and disc (assuming we use standard meter-kilogram-second units) ? Select all that apply.

a. The work done by the force on the block and the work done by the torque on the disc.

b. The acceleration of the block and the angular acceleration of the disc.

c. The mass of the block and the mass of the disc.

d. The translational kinetic energy of the block and the rotational kinetic energy of the disc.

e. The momentum of the block and the angular momentum of the disc

+1

Answers (1)

Know the Answer?

Julius Quinn · Answer 1

C) is incorrect. The mass is equivalent to the moment of inertia in an angular formula.

The others appear all correct.

T * theta = F * r * theta = F * (r theta) = fx = work

This is the only one that needed explanation. The others should be obvious.