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Two blocks of masses 5 kg and 2 kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse gives a velocity of 7m/s to the heavier block in the direction of the lighter block.The velocity of the centre of mass is what???

Two blocks of masses 5 kg and 2 kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse gives a velocity of 7m/s to the heavier block in the direction of the lighter block.The velocity of the centre of mass is what???

Grade:11

1 Answers

Arun
25750 Points
6 years ago
Velocity of centre of mass

Vcm = [m1v1 + m2v2] / [m1+m2]

ย 

ย  ย  ย  ย = [(5x7) + (2x0)] / [5+2]

ย 

ย  ย  ย  ย = 5

ย  ย  ย  ย = 5 m/sec

ย 

Hope it helps

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