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April 18, 2014

Homework Help: physics

Posted by heeeeeeeeeelpppp!!! on Sunday, December 11, 2011 at 12:06pm.

A 2.7 ◊ 10
3
kg elevator carries a maximum
load of 888.9 kg. A constant frictional force
of 2.1 ◊ 10
3
N retards the elevatorís motion
upward.
The acceleration of gravity is 9.81 m/s
2
.
What minimum power must the motor deliver to lift the fully loaded elevator at a constant speed 2.10 m/s?
Answer in units of k

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