A skier of mass 71 kg is pulled up a slope by a motor-driven cable.(adsbygoogle = window.adsbygoogle || []).push({});

(a) How much work is required to pull him a distance of 55 m up a 30° slope at a constant speed of 1.1 m/s

I'm having trouble trying to figure out where velocity comes into play here. Originally I was using the equation W=Fcosø ∆r and I found F using F=mgsinø. But my homework says this is wrong so I'm begging someone to help me out here.

Thanks

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# Homework Help: Work with Velocity Help

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