A block of weight W rests on horizontal floor with coefficient of static friction `mu` . It is desired to make the block move by applying minimum amount of force. The angle `theta` from the horizontal at which the force should be applied and the magnitude F of the force is

Options

A. `theta = 0, F = mu W`
B. `theta = tan^(-1) (mu), F = (mu W)/(sqrt(1 + mu^2))`
C. `theta = tan^(-1) (1/mu), F = (mu W)/(sqrt(1 + mu^2))`
D. `theta = tan^(-1)((mu)/(1 + mu)) , F = (mu W)/(1 + mu^2)`

Answer

B