Question

when a heavy mass is placed on a moving body, the coefficients of friction b/w the moving body and the surface along which it moves will.

Answer 1

Answer:

it will reduce its speed

Answer 2

Explanation:

direction of friction on the heavy body will be towards the direction of the motion of the body while direction of friction force acting on the body will be direction opposite to its motion(because only force which acts on the heavy body is friction force and it will try to produce motion in direction of the motion of lower body therefore the friction force must act in the direction of the motion of the lower body on the heavy body)