Rotational Motion Quiz

Time left: 10m 0s

1. What is the moment of inertia of a solid sphere of mass M and radius R about its diameter?

(2/3) MR²
(1/2) MR²
(2/5) MR²
(3/5) MR²

2. What is the angular velocity of an object rotating with a period of 2 seconds?

π rad/s
2π rad/s
π/2 rad/s
4π rad/s

3. What is the relationship between torque (τ) and angular acceleration (α) for a rigid body?

τ = Iα²
τ = Iα
τ = α/I
τ = I²α

4. A disk is spinning with an angular velocity ω. If the radius of the disk is doubled, how does the moment of inertia change?

It remains the same
It doubles
It halves
It quadruples

5. Which of the following quantities is conserved in a system with no external torque?

Linear momentum
Kinetic energy
Angular momentum
Potential energy