In1960 a mother reportedly lifted one end of a car that had


a) In 1975 the roof of Montreal's Velodrome, with a wieght of360kN, was lifted by 10cm so that it could be centered. Howmuch work was done on the roof by the forces making the lift?

b) In1960, a mother reportedly lifted one end of a car that had fallenonto her son when a jack failed. if her panic lifteffectively raised 400n (about 1/4 of the car's weight) by 5.0 cm, how much work did her force do on the car?

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Physics: In1960 a mother reportedly lifted one end of a car that had
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