- #1
arhzz
- 268
- 52
- Homework Statement
- In a hydraulic press, a small piston with the cross-sectional area a exerts a small force f on the enclosed (incompressible) liquid. A connecting tube leads to a larger piston with cross-sectional area A.
a) Which force F can the large piston counter without moving?
b) The small flask has a diameter of 3.80 cm, the large flask a diameter of 53 cm. What force on the small piston compensates for a force of 20 kN on the large piston?
c) How far does the large piston have to be moved so that the small piston is lifted 0.85 cm?
- Relevant Equations
- p = F/a
Hello!a) Now here I've simply though "logically" and drew a litle sketch and I think the answer should be 0N.No calculation needed I'd pressume (if needed I don't know how to do it)
b) Here I've used the fact that For the surface I just went with (I found online that this is how you calculate the volume of a piston if not please let me know). Than I tried to get F1 and I did that like this Where F2=20000 N, and I get that F1 = 102,81 N.
Now for c) I am kind of stuck.I know it isn't hard but I just can't get a decent idea.What would you suggest for a start?Thank you!
b) Here I've used the fact that
Now for c) I am kind of stuck.I know it isn't hard but I just can't get a decent idea.What would you suggest for a start?Thank you!