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Example: Attach a rope to the ceiling and pass it through a pulley wheel attached to a load W. Then pass the rope through a pulley wheel attached to the ceiling. Bring it down and pull on it. There are 2 ropes lifting the weight W so the tension in the rope is W/2. You are pulling on the rope so you feel a pull of W/2. So you have saved one half.
Every centimetre that the load rises, the lengths of rope between the load and ceiling each reduce by 1cm so you have to pull on your end of rope through a distance 2cm. So the work done is W/2 x 2 which is the same as for lifting the load which is W x 1. So you don't save energy, only force. If you put extra pulleys on the roof and ceiling and take the rope round and round you can reduce the force to W/3, or W/4 or W/5 etc.
What else can I help you with?
How does a pulley save energy?
A pulley saves energy by reducing the amount of force needed to lift an object. It allows the force to be distributed over multiple ropes, making it easier to lift heavy loads with less effort. This efficiency is achieved through the mechanical advantage provided by the pulley system.
How do you go back a bit on your saved file sgm in Pokemon fire red?
Sgm if I remeber right are save state files meaning with your VBA you should click Load State to load back up that Sgm file you made. Do not load it if your state is saved before your actual save of the game. Basically if you save the game the normal method of pressing Start and hitting Save and you have a save state that is placed before that save do not load it.
Why in Pokemon diamond when you save the game it saves but when you try to load your saved file it goes fatal?
ok you have to save the game and reload the game-save reset and then load the saved game-after that close the game and put it on ok you have to save the game and reload the game-save reset and then load the saved game-after that close the game and put it on
Is there an accessorie for nes to save and load?
sadly no
How do you save progress on an association in nba 2k 17?
Us the menu, scroll to load/save, then hit save.
How can I load a svs save state from gpSPhone on VisualBoyAdvance?
Start > Save Then when you open go to saves and it will be there.
How do you update rosters on NBA 2k11 ps2?
go to load/save & go to save roster :)
Can you go back one save in elder scrolls oblivion?
You can load any save you wish.
How do you save the game on pj64 emulater?
you can hit f5, go to system and then save, or system then save as to save the game and not over right the previous game then to load a specific file hit ctrl + L or go to system then to load. i hope that was all you needed
What is normal force supplied?
which force are you talking about? Save
How do you save game in cricket 07?
Go to my cricket select load/save and save a new file or overwrite previous save data and thats it.
Why won't it load working save files?
i have a no cash gba. before i moved all of the save files worked fine. i was able to sale and load all games. i know how to load/save games on it but now it wont let me load any saved games. i know the files are good because they did not have a problem before i moved.does anyone have an idea on why this may be?
