A body of mass M is kept n a rough horiz...

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

F=Mg

F=`mu`Mg

`M,glt=Flt=Mgsqrt(1+mu^(2)`

`MggtFgtMgsqrt(1+mu^(2)`

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