Question

A body is moving on a rough horizontal plate in a circular path being tide to a nail (at the centre) by a string, while the body is in motion the normal reaction by the plate,

• A. changes direction
• B. remains constant
• C. changes magnitude
• D. none of the above

Answer 1

The correct option is B remains constant

As the body is moving in circular path, the forces acting on the body are charging only in plane of motion.

Thus normal reaction is constant as it is perpendicular to the plane of motion.