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Sand drops from the bottom of a hopper into a horizontally moving belt conveyor. If the conveyor is travelling at 2000 fpm and the sand is fed at the rate of 1500 1b/min, the force necessary to drive the conveyor would be

[A].	Zero	[B].	258 lb
[C].	516 lb	[D].	Cannot be determined from the given data

Answer: Option B

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