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May 23, 2015

Homework Help: Physics

Posted by Ellie on Friday, September 21, 2012 at 9:05pm.

A crane is lifting a 500kg payload straight up at a constant speed of 0.7ms-1.
(a)What is the power output of the crane. (ignoring losses)?
(b)If it takes the cran2 2 minutes to raise the payload to its final height, how far above the ground is this?
(c)If the cable were to break as the payload reaches its final height, how fast would it be traveling as it hit the ground?

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