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

My whole problem with this question is that I'm not sure if I need to include ∑Fx and ∑Fy (where ∑Fx = mgsinӨ=ma and ∑Fy= n-mgcosӨ) in order to find F. This is where I'm getting stuck to solve for W

W=FcosӨ Δr

I just need help in getting started with this problem because I keep getting stuck. Any help would be greatly appreciated.

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# Homework Help: Work at a 30degree angle

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