What is the angular momentum of an object with a mass of 5 kg that moves along a circular path of radius 8 m at a frequency of 12 Hz ?

1 Answer
Dec 19, 2015

2.41xx10^(4)"kg.m"^(2)."s"^(-1)

Explanation:

For circular motion the angular momentum L is given by:

L=mxxvxxr

f=12"Hz"

This means 12 revolutions per second. The time period T is given by:

T=1/f=1/12"s"

The distance travelled =2pir

So the velocity =(2pir)/T=(2xxpixx8)/(1/12)=192pi

:.L=5xx192pixx8=2.41xx10^(4)"kg.m"^(2)."s"^(-1)