1.

  A body of mass m rises to a height h = R/5 from the earth’s surface where R is earth’s radius. If g is acceleration due to gravity at the earth’s surface, the increase in potential energy will be

A. mgh B
B. 4/5 mgh
C. 5/6 mgh
D. 6/7 mgh
Answer» D. 6/7 mgh


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