Question

the diameter of disc is 1m it has a mass of 20kg . it is rotating about its axis with speed of 120 rotations in one minute. its angular momentum is​

Answer 1

Answer:

31.4

Explanation:

L=Iw(Omega).

n=no.of rotations/1min=120/60=2

n=2

w=2πn=2×π×2=4π

I=mr×r/2=20×1/2×1/2/2=5/2

L=5/2×4π=5/2×4×22/7=220/7=31.4

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