ROTATIONAL MOTION

What is the net vertical force on the ladder in equilibrium?

• W only
• N only
• F
• Zero

What is the net horizontal force on the ladder in equilibrium?

• F1 only
• F only
• N – W
• Zero

What is the magnitude of the weight W of the 20 kg ladder?

• 20 N
• 98 N
• 196.0 N
• 200 N

What is the value of BC in the ladder triangle?

• 2 m
• √3 m
• 2.5 m
• 2√2 m

Why is the concept of center of gravity important in the ladder problem?

• It reduces friction
• It increases normal force
• It determines the point where weight acts and affects torque
• It balances F1