A Block of Mass M_b Rests on a Horizontal Surface

Multiple Choice

A block of mass m_b rests on a horizontal surface and is accelerated by means of a horizontal cord that passes over a frictionless peg to a hanging weight of mass m_w. The coefficient of kinetic friction between the block and the horizontal surface is µ_k and the tension in the cord is T. The acceleration of the block is given by

A) g.
B) .
C) .
D) .
E) .