A body of mass M is kept on a rough horizontal surface (friction coefficient `= mu`). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on the body is F where :

A body of mass M is kept on a rough horizontal surface (friction coefficient = mu .). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on A is F where

A body of mass M is kept n a rough horizontal surfasce (friction coefficient =mu ). A person is trying to pull he body by applying a horizontal force but the body is not moving. The force by the surface on A is F, where

A body of mass M is kept n a rough horizontal surfasce (friction coefficient =mu). A person is trying to pull he body by applying a horizontal force but the body is not moving. The force by the surface on A is F, where

A body of mass M is kept on a rough horizontal surface (friction coefficient =μ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the horizontal surface on the surface of the body is F, where

A body of mass M is kept on a rough horizontal surface (friction coefficient =μ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the horizontal surface on the surface of the body is F, where

A block of mass 70kg is kept on a rough horizontal surface (mu=0.4) . A person is trying to pull the block by applying a horizontal force, but the block is not moving. The net contact force exerted by the surface on the block is F , then: