question_answer

A block of mass m is attached with a massless spring of force constant k. The block is placed over a rough inclined surface for which the coefficient of friction is \[\mu =3/4\]. The minimum value of M required to move the block up the  plane is (Neglect mass of string and pulley and friction in pulley)

A) \[\frac{3}{5}m\]                        

B) \[\frac{4}{5}m\]

C) \[2m\]                           

D) \[\frac{3}{2}m\]