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OpenStudy (anonymous):
A 6135N piano is pushed up a 4.78m (frictionless) plank at an angle of 25.7 degrees. Find work?? I used, if f =6135N d=4.78m & angle= 25.7, W= f*d*cos(angle) to get 26424.35397Joules but for some reason its wrong?? What am I doing wrong??
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OpenStudy (lgbasallote):
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