ROTATIONAL MOTION

What determines the direction of F2?

• Weight W
• Gravity
• Resultant of N and F
• F1 only

Can the ladder remain in equilibrium without friction at the floor?

• Yes
• Only if wall has friction
• No
• Only for light ladders

What is the role of the center of gravity in the ladder problem?

• Point of maximum friction
• Location where F1 acts
• Location where weight acts
• Point of zero velocity

Is moment of inertia a vector quantity?

• Yes
• Sometimes
• No
• Depends on body

What is the relationship between rotational kinetic energy and angular velocity?

• K ∝ ω
• K ∝ 1/ω
• K ∝ ω²
• K independent of ω