ROTATIONAL MOTION

What is the relationship between work done and power in rotational motion?

• P = Wθ
• P = τα
• Power is the time derivative of work
• P = W/dθ

Why is the torque due to OC excluded in the analysis?

• Because it is too small
• Because OC is perpendicular to the axis
• Because OC is along the axis of rotation
• Because it acts at the center

What is the plane in which force F₁ acts called?

• xy-plane
• x′–y′ plane
• yz-plane
• zx-plane

What is the expression for angular acceleration?

• α = dθ/dt
• α = ω/t
• α = dω/dt
• α = rω

What is the rotational analog of linear acceleration?

• Angular displacement
• Angular velocity
• Angular acceleration
• Torque