Question

Torque Simulation

Start the Torque (uses java) simulation (opens in a new window). Select the Moment of Inertia tab. Set torque to 1. A torque of 1 Nm is applied to the platform. Set mass of the platform to 0.15 kg. Leave all other settings the same.

18. Calculate the moment of inertia for the 0.15 kg platform using the moment of inertia of a disk and then check with the simulation.

A. 0.6 kgm²

B. 2.4 kgm²

C. 1.2 kgm²

19. Click Go. What is the angular acceleration of the platform? Calculate it using Newton’s second law for rotational motion: torque = (moment of inertia) (angular acceleration) and then verify with the simulation.

A. 1.6 rad/s²

B. 1 rad/s²

C. 0.83 rad/s²

20. Decrease the radius of the platform to 3 m (mass stays the same). What happens to the moment of inertia of the platform?

A. Increases.

B. Stays the same.

C. Decreases.

21. What happens to the angular acceleration of the 3 m radius platform if the same torque is applied?

A. Increases.

B. Stays the same.

C. Decreases.

Answer 1

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