Questions
A man weighing 80 kg climbs a staircase carrying a 20 kg load. The staircase has 40 steps each of 25 cm height. If he takes 20 seconds to climb, the work done is…..joule
detailed solution
Correct option is A
work done w= mgh = (80+20) ×9.8×40×0.25= 9800 jouleTalk to our academic expert!
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A bucket of mass ‘m’ tied to a light rope is lowered at a constant acceleration of ‘g/4’. If the bucket is lowered by a distance ‘d’, the work done by the rope will be (neglect the mass of the rope)
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