a. The 70 kg student in FIGURE P14.42 balances a 1200 kg elephant on a hydraulic lift.

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a. The 70 kg student in FIGURE P14.42 balances a 1200 kg elephant on a hydraulic lift. What is the diameter of the piston the student is standing on?
b. When a second student joins the first, the piston sinks 35 cm. What is the second student€™s mass?

1200 kg 70 kg 2.0 m Oil FIGURE P14.42

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