A rod of weight `w` is supported by two parallel knife edges `A` and `B` and is in equilibrium in a horizontal position. The knives are at a distance `d` from each other. The centre of mass of the rod is at a distance `x` from `A`.

Options

A. the normal reaction at A is `(wx)/(d)`
B. the normal reaction at A is `(w (d-x))/(d)`
C. the normal reaction at B is `(wx)/(d)`
D. the normal reaction at B is `(w (d - x))/(d)`

Answer

B, C