10. A block of mass m1 rests on a horizontal table. A string tied to the block is passed on a frictionless pulley fixed at the end of the table and to the other end of string is hung another block of mass m 2 . The acceleration of the system is on a frictionless pulley fixed at the end of the table and to the other end of string is hung another block of mass . The acceleration of the system is
(a) m 2 g / (m1 + m 2 )
(b) m1 g / (m1 + m 2 )
(c) g
(d) m 2 g / m1
Ans. a
(47)