A bar of mass m is placed on a plank of mass m which rests

Last updated: 6/12/2023

A bar of mass m is placed on a plank of mass m which rests on a smooth horizontal plane The coefficient of friction between the surfaces of bar and plank is k The plank is subjected to a horizontal force F depending on time t as F at where a is a constant The moment of time t at which the plank starts sliding is A akg m m m m g ka B D m m kg a ka m m g m m F