A person pushes a rock of $10^{10} k g$ mass by applying a force of only $10 N$ for just $4$ second. The work done is

$1000 J$

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zero

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nearly zero

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nothing can be decided

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Solution

The correct option is B
zero

Work is said to be done when a force is applied to a body, such that the force $(F)$ causes displacement $(s)$ in the body.
Force applied here is, $F = 10 N$
Work done is given as, $W = F \times s$
There is no displacement caused in this case, so the work done is zero.
Hence, option (b) is correct.

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A person pushes a rock of 1010kg mass by applying a force of only 10N for just 4 second. The work done is

A person pushes a rock of $10^{10} k g$ mass by applying a force of only $10 N$ for just $4$ second. The work done is