### Answered: 2.0 m Oil | bartleby

Apr 17, 2020· The 78 kg student in the figure balances a 1000 kg elephant on a hydraulic lift. a) What is the diameter of the piston the student is standing on? I got 0.56 m b) When a second student joins the first, the height difference between the liquid levels in the right and left pistons is 30 cm . What is the second student's mass?