A plank of mass M 8 kg with a bar o mass M 2 kg placed on

Last updated: 6/8/2023

A plank of mass M 8 kg with a bar o mass M 2 kg placed on its rough surface lie on a smooth floor of elevator ascending with an acceleration g 4 The coefficient of friction is u 1 5 between m and m A horizontal force F 30 N is applied to the plank Then the acceleration of bar and the plank in the reference frame of elevator are