A force of \( 750 \mathrm{~N} \) is applied to a block of mass \( 102 \mathrm{~kg} \) to prevent....

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A force of \( 750 \mathrm{~N} \) is applied to a block of mass \( 102 \mathrm{~kg} \)
\( \mathrm{P} \)
to prevent it from sliding on a plane with an inclination angle \( 30^{\circ} \) with the horizontal. If the coefficients of static friction and kinetic friction between the block and the plane are 0.4 and 0.3 respectively, then the frictional force acting on the block is
(1) \( 750 \mathrm{~N} \)
(2) \( 500 \mathrm{~N} \)
(3) \( 345 \mathrm{~N} \)
(4) \( 250 \mathrm{~N} \)


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