Question

Two particles A and B are located at distances r_A and r_B respectively from the centre of a rotating disc such that r_A > r_B. In this case, if angular velocity ω of rotation is constant, then ______

Options

• both A and B do not have any acceleration.

• both A and B have the same acceleration.

• A has greater acceleration than B.

• B has greater acceleration than A.

Answer 1

Two particles A and B are located at distances r_A and r_B respectively from the centre of a rotating disc such that r_A > r_B. In this case, if angular velocity ω of rotation is constant, then A has greater acceleration than B.

Explanation:

As ω is constant, acceleration is due to change in direction of velocity= ω²r

∴ a_A > a_B ....(∵ r_A > r_B)