Question Detail
Question
Two identical wheels are spinning, but wheel B is spinning with twice the angular velocity of wheel A. The ratio of the radial acceleration of a point on the rim of B to the radial acceleration of a point on the rim of A is:
Correct Answer
Option D is the correct answer.
Detailed Explanation
Radial acceleration a = ω²r. Since wheels are identical, r same. If ω_B = 2ω_A, then a_B/a_A = (2ω_A)²/ω_A² = 4.
Hint
a_c ∝ ω².