force F = 100 N is applied horizontally on a block of mass 4 kg. Which is in contact with a wall. Such that it does not fall. The coefficient of friction between the block and the wall is

force F = 100 N is applied horizontally on a block of mass 4 kg. Which

1.	force F = 100 N is applied horizontally on a block of mass 4 kg. Which is in contact with a wall. Such that it does not fall. The coefficient of friction between the block and the wall is
Answer» 0.8 0.5 0.4 0.3 Solution :`N= mu_(s )F` `mu_(s ) = (N )/( F ) =(mg )/(F ) = (4xx 10)/( 100) = 0.4`