- #1
odie5533
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Homework Statement
A sand mover at a quarry lifts 2,000kg of sand per minute a vertical distance of 12 meters. The sand is initially at rest and is discharged at the top of a sand mover with speed 5m/s into a loading chute. At what minimum rate must power be supplied to this machine?
A) 524w B) 1.13kw C) 4.34kw D) 3.92kw E) 6.65kw
The Attempt at a Solution
[tex]W_{MS} = \frac{1}{2}mv_{f}^2 - \frac{1}{2}mv_{0}^2[/tex]
[tex]W_{MS} = \frac{1}{2}(2000)(5)^2 - \frac{1}{2}(2000)(0)_{0}^2[/tex]
[tex]W_{MS} = 25000J[/tex]
There wasn't a picture, and I get kinda lost after this point.