please answer me please
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Step-by-step explanation:
The force required to keep the belt moving is equal to the rate of increase of horizontal momentum of the sand.
Or, F = rate of change of mass × velocity change
=> F = (5 kg/s)(6 m/s)
=> F = 30 N
Now,
Power = work done per second
=> P = force × rate of displacement
=> P = Fv = (30 N)(6 m/s)
=> P = 180 W
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