ROTATIONAL MOTION

What is the reaction force at knife edge K₂ in Example 6.8?

• 54.88 N
• 43.12 N
• 11.76 N
• 35.00 N

What is the reaction force at knife edge K₁ in Example 6.8?

• 43.12 N
• 54.88 N
• 98.00 N
• 25.00 N

Why do the vertical lines intersect at the centre of gravity when a body is suspended from different points?

• Because the body balances equally
• Because air resistance is negligible
• Because of symmetry
• Because at equilibrium, the centre of gravity lies directly below the point of suspension

In Example 6.8, what is the distance from knife edge K₁ to the centre of gravity G?

• 10 cm
• 15 cm
• 25 cm
• 35 cm

What is the total downward force in Example 6.8 due to weights?

• 10.00 N
• 43.12 N
• 54.88 N
• 98.00 N