In the above problem normal reaction between ground and wedge will have magnitude equla to

Options

A. `N cos theta + Mg`
B. `N cos theta + Mg+ mg`
C. `N cos theta - Mg`
D. `N sin theta + Mg + mg`

Answer

A

Explanation

(a) Net force on M in vertical direction should be Zero

In vertically, downwards, two foces N `cos theta` and Mg are acting. Therefore N', the normal reaction from ground should be equal to `N cos theta+Mg`