ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 344

Question 1716

▼

Why is Eq. (6.28b) more fundamental than τ = Iα?

It is easier to understand
It uses simpler math
It applies to non-rigid bodies and systems with internal motion
It includes friction

Question 1717

▼

What is the effect of an external torque on a system's angular momentum?

It has no effect
It stabilizes the rotation
It changes the angular momentum at a rate equal to the torque
It converts angular momentum to linear momentum

Question 1718

▼

What is the condition for rotational equilibrium in a system?

Net external force is zero
Angular velocity is constant
Net external torque is zero
Moment of inertia is maximum

Question 1719

▼

How is the total angular momentum L defined for a system of particles?

L = Σ m_i v_i
L = I ω
L = r_cm × P_total
L = Σ (r_i × p_i)

Question 1720

▼

What happens to the internal torque when action-reaction force pairs are central?

They double the torque
They cause angular acceleration
They produce zero net torque
They depend on mass