ROTATIONAL MOTION

What happens to the direction of torque if both r and F are reversed?

• It reverses
• It becomes zero
• It becomes perpendicular
• It remains the same

What happens to the direction of torque if the direction of force is reversed?

• It remains same
• It reverses
• It becomes zero
• It becomes perpendicular

How is the magnitude of torque expressed in terms of perpendicular distance?

• τ = r⊥ / F
• τ = r⊥ F
• τ = F / r⊥
• τ = r + F

What is the dimensional formula of moment of force?

• M L T⁻²
• M L² T⁻²
• M L⁻² T⁻²
• M L² T⁻¹

When does the moment of force become zero?

• When force is maximum
• When r is maximum
• When line of action of F passes through origin
• When θ = 90°