A rigid disk spins such that its angular velocity increases uniformly with time
PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics
Problem
A rigid disk spins such that its angular velocity increases uniformly with time, producing a straight-line ω versus t graph. Point A is located at a radius r from the center, and point B is at a radius 2r on the same disk. Which statement best compares the tangential accelerations of the two points at any instant during this motion?
(a) Both points have the same tangential acceleration.
(b) Point B’s tangential acceleration is twice that of point A.
(c) Point B’s tangential acceleration is four times that of point A.
(d) Point A’s tangential acceleration is twice that of point B.