Unformatted text preview: shown. Assume the pistons are frictionless and massless.
(b) A mouse can have a mass of 25g and an elephant a mass of 25 g and an elephant a mass
of 7500 kg. Determine a value of D1 and D2 so that the mouse can support the elephant.
Given: P1 P2 Equations and Assumptions:
(4) The mouse can fit on a10 cm diameter piston.
Pascal's Law applies
P1 = P2
P = F/A where F = the weight of the animal Solution:
Starting with Pascal's Law Substituting for pressure: Substituting for area:
12 4 12 4 Solving for D2: 7500 9.81 0.025 0.1
9.81 . Discussion:
If the mouse is occupying a piston of diameter 10 cm, the corresponding piston on which the
elephant sits must have a diameter of 54.7 m since t...
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- Fall '14
- Vapor pressure, pistons, table a.5