Questions
When the angular velocity of a uniformly rotating body has increased thrice, the resultant of forces applied to it increases by 60 N. Find the accelerations of the body in the two cases. The mass of the body m = 3 kg.
detailed solution
Correct option is D
F1=M ω2R and F2 = M (3ω)2 Rgiven ∆F = 9F1-F1=60 NSO a1=F1M=2.5 ms-2 a2 = F2M=22.5 ms-2Talk to our academic expert!
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The angular displacement of a particle is given by where t is time in seconds. Its angular acceleration at t = 2s is
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