Questions
A particle starts from rest and moves along a circular path of radius 5m with a tangential acceleration of constant magnitude. If the length of path traversed by the particle in 2 second is 20 m, its angular acceleration is
detailed solution
Correct option is D
If at be the tangential acceleration of the particle, than S=12at.t2⇒at=2st2∴ α=atr=2Srt2=2×205×22rad/s2=2rad/sec2Talk to our academic expert!
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A stationary wheel starts rotating about its own axis at uniform angular acceleration 8rad/s2. The time taken by it to complete 77 rotations is
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