ROTATIONAL MOTION

What is the role of the position vector in torque calculation?

• It measures mass
• It determines speed
• It defines material
• It determines the moment arm

Why is torque considered a vector quantity?

• Because it is a scalar
• Because it has magnitude only
• Because it has both magnitude and direction
• Because it is dimensionless

What is the result of the cross product ω × r in rotational motion?

• Angular acceleration
• Centripetal acceleration
• Force
• Linear velocity vector

Which of the following produces the greatest torque?

• Small force near axis
• Large force near axis
• Small force at large distance
• Large force at large distance from axis

What happens to angular acceleration if angular velocity is constant?

• It increases
• It decreases
• It becomes zero
• It oscillates