A total of 4900 joules was expended in lifting a 50 kg mass, then the mass was raised to a height of :

98m

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960m

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245m

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10m

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Solution

The correct option is D 10m
P.E = mgh
4900 = 50 $$ 9.8 $$ h
4900 = 490 $*$ h
h = 10 m

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A frontend loader applied 150 N of force to lift a stone. If a work of 1250 joules was done in total, then what is the distance moved by the stone?

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