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April 19, 2014

Homework Help: physics

Posted by Anonymous on Tuesday, November 15, 2011 at 9:06pm.

A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 12 degrees with the horizontal. The rope moves parallel to the slope with a constant speed of 1.0 m/s. The force of the rope does 880 J of work on the skier as the skier moves a distance of 7.0 m up the incline.
(a) If the rope moved with a constant speed of 2.0 m/s, how much work would the force of the rope do on the skier as the skier moved a distance of 8.0 m up the incline?

At what rate is the force of the rope doing work on the skier when the rope moves with a speed of:
(b) 1.0 m/s

(c) 2.0 m/s

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