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

Last updated: 6/5/2023

A plank of mass m 8 kg with a bar of 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 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 A 3 5 m s 5 m s 25 8 C 2 5 m s m s g 4 3 3 F m B 5 m s 50 m s D 4 5 m s 4 5m s