A total of 4900J was expended in lifting a 50kg mass. The mass was raised to a height of:

98 m

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960 m

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245 m

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10 m

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Solution

The correct option is D 10 m
Energy expended to lift the body will be stored as potential energy which is given by mgh.
So $50 \times 9.8 \times h = 4900$
So $h = 10 m$ .

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A total of 4900J was expended in lifting a 50kg mass. The mass was raised to a height of:

The correct option is D 10 mEnergy expended to lift the body will be stored as potential energy which is given by mgh.So 50×9.8×h=4900So h=10m.

The correct option is D 10 m
Energy expended to lift the body will be stored as potential energy which is given by mgh.
So $50 \times 9.8 \times h = 4900$
So $h = 10 m$ .