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Question 1: A disc is rotating with an angular velocity of 20 rad/s. What is its angular displacement after 2 seconds?

20 rad
30 rad
40 rad
50 rad

Question 2: The moment of inertia of a body depends on:

Its linear velocity
Distribution of mass and axis of rotation
Both of the above
None of the above

 

Question 3: If a particle moves in a circular path with uniform speed, its:

Angular velocity is constant
Tangential acceleration is constant
Radial acceleration is zero
None of the above

Question 4: A flywheel has a moment of inertia of 10 kg·m² and is rotating at 100 rad/s. What is its rotational kinetic energy?

100 J
500 J
1000 J
50000 J

Question 5: Which of the following quantities is a vector?

Angular speed
Angular velocity
Rotational kinetic energy
Moment of inertia