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3-2.Motion in Plane
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$120\ r.p.m.$ થી ફરતા પૈડાની કોણીય ઝડપ કેટલી હોય ?
A$\pi \,rad/sec$
B$2$$\pi \,rad/sec$
C$4$$\pi\, rad/sec$
D$4$$\pi^2\, rad/sec$
Solution
$120 rev$ $/ \min =120 \times 2 \pi / 60 \mathrm{rad} / \mathrm{sec}=4 \pi \mathrm{rad} / \mathrm{sec}$
Standard 11
Physics