Homework Answers
a)
Wp = F d = 170* 6.9 = + 1173 J
Wf = F d cos 180 = - 0.17* 51* 9.8* 6.9 = - 586.2654 J
Wmg = F d cos 90 = 0 J
Wn = F d cos 90 = 0 J
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