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Answer to Question #18842 in Mechanics | Relativity for Jessica

Question #18842
A horizontal force 39ˍN is used to help push an 31ˍkg box up a 13ˍm incline with
angle 23°, as shown. What is the work done by this applied force? What is the work done by gravity?
Expert's answer
W = Delta PE = m*g* (delta h) = (31 кг) * (9.8 м / с / с) * (13 м) = 3 949,4 joule

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