A block of mass \( m=\frac{1}{3} \mathrm{~kg} \) is kept on a rough...

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A block of mass \( m=\frac{1}{3} \mathrm{~kg} \) is kept on a rough
\( \mathrm{P} \) horizontal plane. Friction coefficient is

W \( \mu=0.75 \). The work done by minimum force required to drag the block along the plane by a distance \( 5 \mathrm{~m} \), is :-
(1) \( 8 \mathrm{~J} \)
(2) \( 4 \mathrm{~J} \)
(3) \( 2 \mathrm{~J} \)
(4) \( 6 \mathrm{~J} \)
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