Question

Two blocks of masses M and m, with M > m, are connected by a light string. The string passes over a friction less pulley of negligible mass so that the blocks hang vertically. The blocks are then released from rest. What is the acceleration of the block of mass M?

(A) g

(B) ((M - m)/M)g

(C)  ((M + m)/M)g

(D) ((M + m)/(M - m))g

(E) ((m - m)/(M + m))g

Answer 1

Correct option (E) ((m - m)/(M + m))g

ΣF_external = m_totala gives (Mg) – (mg) = (M + m)a