Register to reply

Pascal's Principle Problem

by Collegestudent5
Tags: pascal, principle
Share this thread:
Collegestudent5
#1
Nov13-07, 11:09 PM
P: 4
A piston of cross-sectional area "a" is used in a hydraulic press to exert a small force of magnitude "f" on the enclosed liquid. A connecting pipe leads to a larger piston of cross-sectional area A. (a) what force magnitude F will the larger piston sustain without moving? (b) If the piston diameters are 3.80 cm and 53.0 cm, what force magnitude on the small piston will balance a 20.0 kN force on the large piston?

A picture of the figure can be found at
http://panda.unm.edu/Courses/Price/Phys160/F33-3.jpeg

I used the formula f/a = F/A for (a). the answer I found was F = f x 195. Am i supposed to leave f in my answer. If no, how do i solve for f.

I used the same formula for (b) and got 102.

Please help me double check my answers.
Phys.Org News Partner Science news on Phys.org
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Shooting Star
#2
Nov14-07, 05:15 AM
HW Helper
P: 1,979
Seems to be correct. In the first Q, you just have to write fA/a, I think, because the values are given only in (b).
Collegestudent5
#3
Nov14-07, 07:19 AM
P: 4
Thanks for the help.


Register to reply

Related Discussions
Pascal's Principle Introductory Physics Homework 2
Pascal's Principle help. Introductory Physics Homework 3
Pascal's Principle? Advanced Physics Homework 4
Pascal's Principle? Are my solutions correct? Introductory Physics Homework 2
Pascal's Principle General Physics 3