Question Detail
Question
A constant force F is applied tangentially along the rim of a flywheel of radius r. If the flywheel has a moment of inertia I and experiences an angular acceleration α, which equation relates these quantities?
Correct Answer
Option A is the correct answer.
Detailed Explanation
The torque produced by a tangential force F at a distance r from the axis is τ = F r. Newton's second law for rotation states τ = I α. Equating these gives F r = I α, which can be rearranged to solve for the force: F = (I α) / r.
Hint
Relate the torque due to the tangential force to the torque required for the given angular acceleration.