NSMQ2025 Preliminary Day One Contest: Sample Questions and Answers (SET O1). Find the change in potential energy of an object of the given weight w when its height above ground changes from H1 to H2 as given; W = 20.0N, h1 = 3.0m, and h2 = 5.0 m Ans:  40 J W= 4.0N, h1 =6.0m…

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