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A small ball of mass 'm' is released at ...


A small ball of mass 'm' is released at a height 'R' above the earth surface, as shown in the figure. If the maximum depth of the ball to which it goes is R/2 inside the earth through a narrow grove before coming to rest momentarily. the grove, contain an ideal spring of spring constanK and natural length R, the value of K is (R is radius of Earth and M mass of Earth)

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