ROTATIONAL MOTION

What is the effect of doubling the distance from the pivot on the torque produced by a force?

• Torque halves
• Torque remains same
• Torque doubles if force direction remains the same
• Torque becomes zero

Why is the cross product used in defining torque and angular momentum?

• It makes calculations harder
• It is arbitrary
• It naturally incorporates perpendicular components and direction
• It reduces units

What determines the stability of a rigid body in equilibrium?

• Its color
• Its speed
• The nature of the restoring torque when displaced
• The number of forces

How does the conservation of angular momentum manifest in a diver’s motion?

• They swim in air
• They change mass
• The diver changes body shape to alter rotation speed in air
• They stop rotating

What is the minimum number of forces required to achieve rotational equilibrium with non-zero forces?

• One
• Two
• Three
• Four