A block of mass \( 10 \mathrm{~kg} \) is kept on an inclined \( \mathrm{P} \) plane of inclinati...

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A block of mass \( 10 \mathrm{~kg} \) is kept on an inclined
\( \mathrm{P} \) plane of inclination \( 30^{\circ} \). If the coefficient of friction between the block and planes surface is \( 0.6 \), then force of friction on block is :-
(1) \( 100 \mathrm{~N} \)
(2) \( 50 \mathrm{~N} \)
(3) \( 30 \sqrt{3} \mathrm{~N} \)
(4) None of these
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