Question

Q. A disc of radius R rolls on a rough horizontal surface. The distance covered by the point A in one revolution is

2πR

2R

8R

πR

Answer 1

Answer:

(A) 2πR

Explanation:

For pure rolling without slipping, the distance covered by point P is equal to the circumference of the circle.

The circumference of the circle = 2πR

Rolling motion is the type of motion which is combination of both translation and rotation motion.

In rolling motion there is no sliding motion occur.

Hence, a disc of radius R rolls on a rough horizontal surface , the distance covered by the point A in one revolution is 2πR