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Original Question
When sand is poured on a rotating disc what happen to its angular velocity ? explainAsked by pooja
Whn sand is poured on a rotatory disc what happens to its angular velocity. Explain
Answers
Answered by
bobpursley
If the disk is free to move, then pouring sand on it slows it down. Angular momentum is conserved
AngMomDisk+angmomeumfallingSand=angular momentum disk/sand
Since final angular momentum is constant, and consists of the mass of sand on the disk, and the angular velocity, increasing the mass has to decrease anglar velocity.
AngMomDisk+angmomeumfallingSand=angular momentum disk/sand
Since final angular momentum is constant, and consists of the mass of sand on the disk, and the angular velocity, increasing the mass has to decrease anglar velocity.
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