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?

- Physics -
**drwls**, Friday, September 21, 2012 at 10:33pm
Someone will be happy to critique your work. Priority is given to students who make some sort of an effort.

- Physics -
**Ellie**, Saturday, September 22, 2012 at 2:59pm
Im not sure what equations to use other than the equation for potential energy or the equation for work. That is about as far as I have come to solving the problem.

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