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How a CPH does stop or its speed decreases?
Answer; it is a principle that Vc is stable thus that;
gradVc=0
Thus, never Vc increases or decreases.
What is the work done to take a particle of mass m from surface of the earth to a height equal to 2R (R=radius of earth )? Ans) Initial PE= - GMm/R Final PE = - GMm/3R
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