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Instantaneous Force and Impulse

2 blocks of m...

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2 blocks of masses 5 kg and 2 kg placed on a frictionless surface are connected by a spring. An external kick gives a velocity of 14m/s to the heavier block in the direction of the lighter one. Calculate the velocity gained by the centre of mass.

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Q. Two blocks of masses 5 kg and 2 kg are placed on a frictionless surface and connected by a spring. An external kick gives a velocity of 14 m/s to the heavier block in the direction of lighter one. The magnitudes of velocities of two blocks in the centre of mass frame after the kick are, respectively :

Q. Two blocks of masses

5 k g

2 k g

placed on a frictionless surface are connected by a spring. An external kick gives a velocity of

14 m / s

to the heavier block in the direction of the lighter one. Calculate the velocity gained by the centre of mass.

Q. Figure below shows two blocks of masses 5 kg and 2 kg placed on a frictionless surface and connected with a spring. An external kick gives a velocity of 14 m/s to the heavier block in the direction of lighter one. Deduce (a) velocity gained by the centre of mass and (b) the separate velocities of the two blocks in the centre of mass coordinates just after the kick.

Q. Two blocks of masses

5 kg

2 kg

are placed at rest on a frictionless surface and connected by a spring. An external hit gives a velocity of

21 m/s

to the heavier block towards the lighter one. Velocities of both blocks (heavier and lighter one) in the centre of mass frame, just after the kick will be respectively:
(Consider direction of motion of heavier block as

+ v e

Q. Figure shows two blocks

4 k g

2 k g

placed on a frictionless surface and connected with a spring. An external push gives a velocity of

10 m s^{- 1}

to the heavier block in the direction of the lighter one. At that instant, the velocity gained by the centre of mass will be

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