Physics-
The two bodies of mass 
and 
respectively are tied to the ends of a massless string, which passes over a light and frictionless pulley. The masses are initially at rest and the released. Then acceleration of the centre of mass of the system is
Physics-General
- zero
Answer:The correct answer is: In the pulley arrangement 
But 
is in downward direction and in the upward direction 
, 
Acceleration of centre of mass
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Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on frictionless horizontal surface. An impulsive force gives a velocity of 14 to the heavier block in the direction of the lighter block. The velocity of centre of mass of the system at that very moment is
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