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 , the increase in PE is

5mgh/6

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6mgh/7

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mgh

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4mgh/5

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Solution

The correct option is A
5mgh/6

Increase in PE = mgR₂[ 1/R – 1/( R + h)]

Put R = 5h

Incr. in PE = 5mgh/6

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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 , the increase in PE is

The correct option is A 5mgh/6 Increase in PE = mgR­2 [ 1/R – 1/( R + h)] Put R = 5h Incr. in PE = 5mgh/6

The correct option is A
5mgh/6

Increase in PE = mgR₂[ 1/R – 1/( R + h)]

Put R = 5h

Incr. in PE = 5mgh/6