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[" 13."A" particle of mass "m" moves alo...

[" 13."A" particle of mass "m" moves along a circle of radius "R" with a normal acceleration varying with time as "],[a_(n)=at^(2)," where "a'" is a constant.Find the time dependence of the power developed by all the forces acting "],[" on the particle,and the mean value of this power averaged over the first t seconds after the beginning of "],[" motion."]

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