The statue of Isaac Newton is crated and moved from the Oxford Museum of Natural History and Science for cleaning. The mass of the statue and the crate is 150 kg. As the statue slides down a ramp inclined at 40.0°, the curator pushes up, parallel to the ramp's surface, so that the crate does not accelerate. 2) Calculate the work done by the curator. (Express your answer to two significant figures. 3)Calculate the work done by the friction force. (Express your answer to two significant figures.) 4)Calculate the work done by normal force between the ramp and the crate. (Express your answer to two significant figures.)
B)
Force, F = mg sin(theta) - u mg cos(theta)
F = (150 x 9.8 x sin(40)) - (0.54 x 150 x 9.8 x cos(40))
F = 336.81 N
W = 336.81 x 3 x cos(180) = - 1010.43 J
C)
W = u mg d cos(theta) cos(phi)
W = 0.54 x 150 x 9.8 x 3 x cos(40) cos(180) = - 1824.25 J
D)
W = mg d cos(theta) cos(phi)
W = 0.54 x 150 x 3 x 9.8 x cos(40) cos(90) = 0
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The statue of Isaac Newton is crated and moved from the Oxford Museum of Natural History...