Two men to masses `80kg` and `60kg` are standing on a wood plank of mass `100kg`,
Channel: Doubtnut
Date: 26/01/2020

Two men to masses `80kg` and `60kg` are standing on a wood plank of mass `100kg`, that has been placed over a smooth surface. If both the men start moving towards each other with speeds `1m//s` and `2 m//s` respectively then find the velocity of the plank by which it starts moving.