Question

A coolie works for 8 3\4 hours per day. How many hours of work does he put in a month of 31 days.​

Answer 1

The coolie does zero work because the displacement and force are perpendicular to each other.

From the formula,

Work = FScos

$work \: done = fs \cos( \alpha ) \: were \: \alpha \: is \: the \: angle \: between \: force \: and \: displcement \\ since \: cos90 = 0 \\ te \: coolie \: does \: no \: work$

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