Quiz on Rotation of Rigid Bodies

What is the S.I. unit of angular displacement?

• Radian (rad)

• Degree (°)

• Revolution (rev)

• Meter (m)

Which equation represents the relationship between torque (τ) and angular acceleration (α)?

• τ = Iα

• τ = mα

• τ = vω

• τ = rF

What is the average angular velocity (ωav) defined as?

• The change in angular acceleration

• The total angular displacement

• The rate of change of angular displacement

• The product of angular displacement and time

What does the moment of inertia (I) depend on?

• The speed of rotation

• Mass and shape of the body

• Only the mass of the body

• Only the shape of the body

Which of the following is a condition for equilibrium of a rigid body?

• The mass must be constant

• The body must be in motion

• The sum of all torques must be non-zero

• The sum of all forces must be zero

What is the principle of conservation of angular momentum?

• L = mv is constant

• E = mc² is constant

• L = Iω is constant

• F = ma is constant

What is the angular displacement (θ) of a wheel if it rotates 2.5 revolutions?

• 10 rad

• 2.5 rad

• 7.5 rad

• 5π rad

Which of the following describes angular acceleration (α)?

• Rate of change of angular velocity

• Total angular displacement

• Rate of change of torque

• Total torque applied

What is the relationship between linear velocity (v) and angular velocity (ω)?

• v = rω

• v = ω/r

• v = ω²r

• v = r²ω

What is the moment of inertia of a solid sphere about its center of mass?

• 2/5 MR²

• 1/2 MR²

• MR²

• 3/5 MR²