A disc of mass \( 50 \mathrm{~g} \) slides with zero initial velocity down an inclined plane set...
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0A disc of mass \( 50 \mathrm{~g} \) slides with zero initial velocity down an inclined plane set at an angle \( 30^{\circ} \) to
\( \mathrm{P} \) the horizontal, Having traversed a distance of \( 50 \mathrm{~cm} \) along the horizontal plane, the disc stops.
W Find the work performed by the friction forces over the whole distance, assuming the friction coefficient \( 0.15 \) for both inclined and horizontal planes. (Take, \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
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