A block B is pulled by a force of 18 N applied to a light pulley as shown in the figure. If the coefficient of friction is 0.4 and the acceleration of the block is 0.5 `ms^(-2)` , the mass of the block is `(g = 10 m//s^2)`

Options

A. 1 kg
B. 2 kg
C. 3 kg
D. 1.5 kg

Answer

B