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Grade: 11

                        

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???

2 years ago

Answers : (1)

Arun
24742 Points
							
Velocity of centre of mass

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

 

       = [(5x7) + (2x0)] / [5+2]

 

       = 5

       = 5 m/sec

 

Hope it helps

2 years ago
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