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  4. Joule second is the unit of

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Q. Joule second is the unit of

Physical World, Units and Measurements

Solution:

Angular momentum = mvr
= $ kilogram \times \frac{ metre }{ second } \times metre $
= $ kilogram \times \frac{ ( metre )^2 \times second }{ second \times second } $
= $ \Bigg ( kg \times \frac{ ( metre )^2 }{ second^2 } \Bigg ) \times sec $
= $ joule \times second $