MHT CET20242 May 2024Morning ShiftPhysicsLaws of MotionActual
Two identical blocks each of mass ' M ' attached to the ends of a massless inextensible string which passes over a pulley with a fixed axis as shown below. A small mass ' m ' is now placed on the block B. The acceleration with which the two blocks move together is [ g = gravitational acceleration]
Options
- Amg 2 M + m
- BMg M +2 ~m
- CMg 2 M + m
- Dm g M+2 m
Correct answer
A. mg 2 M + m
Step-by-step solution
aligned & ( M + m ) g - T =( M + m ) a & ~T - Mg = Ma aligned Adding the above equations, ( M + m ) g - Mg =(2 M + m ) a a= m g (2 M+m)