A man walking downhill with velocity u finds that his umbrella gives him maximum protection from rain when he holds it such that

Question

A man walking downhill with velocity u finds that his umbrella gives him maximum protection from rain when he holds it such that the stick is perpendicular to the hill surface When the man turns back and climbs the hill with velocity u he find that it is most appropriate to hold the umbrella stick vertical Find the speed of raindrops w r t ground The inclination of the hill is 0 30 u 52 m s

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