The work done in lifting 1 kg mass to a height of 9.8 m is about

1 J

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9.8 J

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(9.8)^{2} J

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\frac{1}{(9.8)^{2}} J

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Solution

The correct option is B $(9.8)^{2} J$
The work done in lifting an object is stored as its potential energy.
Mass of object $m = 1$ kg
Height upto which it is lifted $h = 9.8$ m
Hence work done $W = m g h = 1 \times 9.8 \times 9.8 = (9.8)^{2} J$
Thus option C is correct.

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The work done in lifting 1 kg mass to a height of 9.8 m is about

The correct option is B (9.8)2JThe work done in lifting an object is stored as its potential energy.Mass of object m=1 kgHeight upto which it is lifted h=9.8 mHence work done W=mgh=1×9.8×9.8=(9.8)2JThus option C is correct.

The correct option is B $(9.8)^{2} J$
The work done in lifting an object is stored as its potential energy.
Mass of object $m = 1$ kg
Height upto which it is lifted $h = 9.8$ m
Hence work done $W = m g h = 1 \times 9.8 \times 9.8 = (9.8)^{2} J$
Thus option C is correct.