state and prove principle of conservation of angular momentum. Explain it with examples
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Momentum : Is the product of mass and velocity of an object . P /mv . momentum is a vector quality .
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The linear momentum and angular momentum of the body is given by →p=m→v and →l=→r×→p about an axis through the origin. The angular momentum →l may change with time due to a torque on the particle. ∴→l = constant, i.e. →l is conserved. ... its angular velocity will also change if there is no external torque
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