A in 1975 the roof of montreals velodrome with a weight of, Ask an Expert

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(a) in 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift?

(b) in 1960, mrs maxwell rogers of tampa florida, reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about a quarter of the car's weight) by 5 cm, how much work did her force do on the car?

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