ROTATIONAL MOTION

Which of the following best defines the axis of rotation?

• The point where torque is applied
• The line about which a body rotates
• The center of gravity
• The edge of the body

What happens to the kinetic energy of a rotating ring if its angular velocity is doubled?

• It doubles
• It becomes four times larger
• It remains the same
• It halves

For a uniform rod of length L, what is its moment of inertia about an axis perpendicular to the rod and passing through one end?

• (1/12)ML²
• (1/6)ML²
• (1/3)ML²
• (1/2)ML²

What is the moment of inertia of a point mass M at a distance R from the axis of rotation?

• MR
• MR²
• M/R
• M²R

What is the moment of inertia of a system independent of?

• Mass distribution
• Shape of the body
• Angular velocity
• Position of the axis