Question Detail
Question
If a net torque of 8 N m acts on a wheel with a moment of inertia of 2 kg m², what is its angular acceleration?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Applying Newton's second law for rotation, ∑τ = Iα, we can solve for angular acceleration α = ∑τ / I. Substituting the given values, α = (8 N m) / (2 kg m²) = 4 rad/s².
Hint
Use the rotational analog of Newton's second law: angular acceleration equals net torque divided by moment of inertia.