Explain how energy is conserved when the hydraulic press system is able to move a heavier object.
For the first part, I have to describe how the system works but I do not know how to explain the part on how energy is conserved.
Please help, thanks
Just say energy is converted to other forms, eg. Electrical--> kinectic energy, etc.... then you also state the law of conservation of energy, "energy cannot be created or destroyed, only transformed from one form to another".
i think thats how it should go :D! hahaa.. if you have a better idea, then by all means XD!
All the best!
State the laws of conservation of energy that energy can never be created of destoryed. It can only be converted from 1 forms to another and any 'loss' of energy u seem to observe is normally energy converted to heat, sound or light since energy conversions for work is never 100% effective.
energy conserved because the pressure at the other end of the press is the same, which the lesser area de end having more force as a result of the formula P=f/a
hence u conserve energy =x
Originally posted by yiha093:energy conserved because the pressure at the other end of the press is the same, which the lesser area de end having more force as a result of the formula P=f/a
hence u conserve energy =x
only half correct
side with lesser area also move further distance because volume of fluid must be the same
So in the end, for both F*d is the same
Note: F*d = P * A * d = P * V ===> and P & V is same for both sides :D
Other than that, try to answer... Why is oil a better fluid to use as compared to water in a hydraulic system?
Originally posted by eagle:only half correct
side with lesser area also move further distance because volume of fluid must be the sameSo in the end, for both F*d is the same
Note: F*d = P * A * d = P * V ===> and P & V is same for both sides :D
Other than that, try to answer... Why is oil a better fluid to use as compared to water in a hydraulic system?
density !!
i think =x
Originally posted by yiha093:density !!
i think =x
Notice that density wasn't use anywhere in my calculations?
more dense cause smaller vol bigger force . vol and force in ur calculations =x
Originally posted by yiha093:more dense cause smaller vol bigger force . vol and force in ur calculations =x
difference in volume is due to difference in area
density of fluid is too little to affect anything else
main thing is, oil can act as a lubricant as well for the moving parts in the hydraulic system. So it has dual functions.
Much like petrol is also used as lubricant in car engines (or so I think) as well as used as fuel