A man of mass m is standing on a plank of mass M kept on a rough surface. When the man walks from left to right on the plank, the centre of mass ( man + plank ) of the system A man of mass m is standing on a plank of mass M kept on a rough surface. When the man walks from left to right on the plank the centre of mass ( man + plank ) of the system September 20, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related