A loaded spring gun of mass M fires a shot of mass m with a velocity υ 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-shot system

Question

A loaded spring gun of mass M fires a shot of mass m with a velocity υ 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-shot system, moves with a velocity υ m M, moves with a velocity υ m M cos θ in the horizontal direction, remains at rest, moves with a velocity υ M - m M + m in the horizontal direction

MARKS App · Accepted Answer

If we consider a system consists of a gun plus mass m then no external force is present on the system. So, the acceleration of the centre of mass of the system will be zero. Since initially the system is in rest. So, the centre of mass will always remain at rest.

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