A small mass is placed on a record turntable that is rotating at 45 rpm.The linear acceleration of the mass is
A)directed perpendicular to the line joining the mass and the center of rotation.
B)independent (in magnitude)of the position of the mass on the turntable.
C)greater the closer the mass is to the center.
D)greater the farther the mass is from the center.
E)zero.

Question

Quizplus · Accepted Answer

The linear acceleration of a mass on a rotating turntable is due to the centripetal force, which is directed towards the center of rotation. The magnitude of this acceleration is given by the formula a = ω²r, where ω is the angular velocity and r is the distance from the center. Thus, the acceleration increases with the distance from the center.

A Small Mass Is Placed on a Record Turntable That