Practice question
Question
A particle completes 5 revolutions in 2s in a circular path of radius 0.8m. What is its linear speed?
Explanation
Frequency f=nt=52=2.5Hz. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 8 m/s as the result, so option C is correct.
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