A small block having a mass m given a velocity u when it is

Last updated: 6/12/2023

A small block having a mass m given a velocity u when it is on top of a horizontal board of sufficient length Mass of the board is 3m and is situated on a frictionless floor as shown The total work done by frictional force from the moment of projection to time t is M Drough 7 3m m 15 1 mu 2 smooth 30mu 3 mu 4 2 mu 16