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A force \( \mathrm{F}=-6 \mathrm{x}^{3} \) is acting on a block moving along \( \mathrm{x} \)-axis. Work done by this force is :-
\( \mathrm{P} \)
(1) Negative in displacing the block from \( x=3 \)
W to \( x=1 \).
(2) Negative in displacing the block from \( x=-3 \) to \( x=-1 \).
(3) Negative in displacing the block from \( \mathrm{x}=0 \) to \( x=4 \).
(4) Non-zero in displacing the block from \( x=-2 \) to \( x=+2 \).
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