(adsbygoogle = window.adsbygoogle || []).push({}); angular momentum trouble!!!!!

since the angular momentum of a particle moving about a fixed point (axis) is given by

L=r X p= r X mv

where;

L=angular momentum

r= distance from the axis

p=linear momentum of the particle

m= mass of the particle

v= linear velocity of the particle

but if the distance 'r' decreases linear velocity 'v' should increase due to the law of conservation of angular momentum

but if linear velocity 'v' of the particle decreases then the linear momentum 'p' would also decrease , but this is against the law of conservation of linear momentum.(there is no external force acting on the system)

how is this possible .pls explain

there r no external force acting on the system including torque (friction is neglected)

eg. a planet revolving around the sun,as it comes closer to the sun its linear velocity increases bcuz angular momentum must be conserved but the increase in velocity means that its linear momentum wud increase

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# Angular momentum trouble

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