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March 26, 2017

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A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.0 m, 4.1 m) while a constant force acts on it. The force has magnitude 2.4 N and is directed at a counterclockwise angle of 100° from the positive direction of the x axis. How much work is done by the force on the coin during the displacement?
___________ J

  • Physics - ,

    w=F_x D_x+F_y D_y
    =2.4¡Á3¡Ácos¡¼100¡ã¡½+2.4¡Á4.1¡Ásin¡¼100¡ã¡½
    =8.44 J

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