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Question 3

Solution

The 73 student in the figure balances a 1300 elephant on a
hydraulic lift. 

 

Part A:


What is the diameter of the piston the student is standing on?


Express your answer to two significant figures and include the appropriate units.

 

Part B:

 

When a second student joins the first, the height difference between the liquid levels in the right and left pistons is 40.


What is the second student's mass
Express your answer to two significant figures and include the appropriate units.

 

*Image source: Physics for scientists and engineers (3rd edition)

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