1.

A particle moving in a circular path has an angular momentum of L. If the frequency of rotation is halved, then its angular momentum becomes

Answer»

`(L)/(2)`
L
`(L)/(3)`
`(L)/(4)`

Solution :We KNOE that `L=I omega=2pi mr^(2)f`
Now, `omega'=omega//2`
Hence, `L'=Iomega'=mr^(2)=(omega)/(2)=PIMR^(2)f RARR (L)/(L')=(2M pi r^(2)f)/(pi mr^(2)f)rArr L'=(L)/(2)`.


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