Questions
Sand drops vertically at the rate of 2 kgs–1 on to a conveyor belt moving horizontally with a velocity of 0.1 ms–1. The extra power needed to keep the belt moving is
detailed solution
Correct option is B
Force required to keep the belt moving = rate of increase of horizontal momentum of sand = mass per seconddmdt× velocity change =2×0.1=0.2 NPower = Force ´ velocity=0.2×0.1=0.02 WTalk to our academic expert!
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