Question

(Multiple Correct Type) The motion of a sphere moving on a rough horizontal surface changes from pure sliding to pure rolling (without slipping). In this process the force of friction:

(A) Initially acts opposite to the direction of motion and later in the direction of motion
(B) Cause linear retardation
(C) Cause angular acceleration
(D) Stop acting when pure rolling begins

Answer 1

a b cd all are correct....
.....

Answer 2

Answer:

option c

Explanation:

because of electronic statics force.