A man of mass
m is standing on a plank kept on ground having mass
m. There is no friction between the plank and the ground. If the man walks with an acceleration a w.r.t. the plank then calculate the acceleration of the plank w.r.t. the ground. Also calculate friction force exerted by the plank on man.
![1017639_93f366cdcd1b41bd99ef11dd5582fca4.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/1017639_93f366cdcd1b41bd99ef11dd5582fca4.png)