A constant horizontal force (F) is appli...

A constant horizontal force (F) is applied at the vertex A of an equilateral triangular wedge ABC of mass M and side length AB=BC=CA=`l_(1)` placed on a rough horizontal surface as shown in the figure. Even after the application of force F the wedge remains stationary. Calculate the torque of normal reaction acting between the wedge and the floor about the vertex B.

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The correct Answer is:

`((Mg+ sqrt( 3) F ) l )/( 2)`

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