A plank 1 m long is fixed with one end 28 cm above the level

Last updated: 6/13/2023

A plank 1 m long is fixed with one end 28 cm above the level of the other end The top half of the plank is smooth and the bottom half is rough When a small block of mass m is released at the top it just reaches the bottom skipped B C D coefficient of friction between the block and the rough part of plank is 7 12 the coefficient of friction between the block and the rough part of plank is 1 2 Str on the rough part the reaction on the block is 24 25 mg on the rough part the reaction on the block is 28 100 mg