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Standard XII

Physics

Newton's Laws for System of Particles

A loaded spri...

Question

A loaded spring gun of mass 'M' fires a bullet of mass 'm' with a velocity 'v' at an angle of elevation θ. The gun is initially at rest on a horizontal frictionless surface. After firing, the centre of mass of the gun–bullet system

Moves with a velocity v m/M

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moves with velocity vm/M cos

in the horizontal direction

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Remains at rest

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moves with a velocity

in the horizontal direction.

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Solution

The correct option is C Remains at rest
Since the forces acting during the firing are internal forceson the gun-shot system, the centre of mass of the system continues to remain at rest. Hence the correct choice is (c).

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A loaded spring gun of mass 'M' fires a bullet of mass 'm' with a velocity 'v' at an angle of elevation θ. The gun is initially at rest on a horizontal frictionless surface. After firing, the centre of mass of the gun­–bullet system

The correct option is C Remains at restSince the forces acting during the firing are internal forceson the gun-shot system, the centre of mass of the system continues to remain at rest. Hence the correct choice is (c).

A loaded spring gun of mass 'M' fires a bullet of mass 'm' with a velocity 'v' at an angle of elevation θ. The gun is initially at rest on a horizontal frictionless surface. After firing, the centre of mass of the gun–bullet system

The correct option is C Remains at rest
Since the forces acting during the firing are internal forceson the gun-shot system, the centre of mass of the system continues to remain at rest. Hence the correct choice is (c).