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Can Openers
A can opener is a hand-held or electric device used for opening metal cans.
199 Questions
What type of simple machine is the can opener?
The can opener is a compound machine, typically combining levers and gears, to make it easier to open cans by multiplying force and reducing the effort needed.
Where are the input and output forces on a can opener?
The input force on a can opener is the force exerted by the user's hand to turn the handle. The output force is the force that the can opener applies to the can as it punctures and cuts through the lid.
What class of lever is a can opener?
A can opener is a class 2 lever, where the load (the can lid) is between the fulcrum (the turning point) and the effort (your hand). The mechanical advantage gained from this arrangement helps to make it easier to open cans.
Why does a cat comes running when it hears a can opener?
Cats associate the sound of a can opener with the possibility of receiving food, which triggers their hunting instincts and motivates them to come running in anticipation of a meal. The sound has likely been consistently paired with positive experiences of being fed, creating a strong association in the cat's mind.
How does an electric jar opener work?
An Electric Jar opener works by having the lid grabbed by the top of the opener after the jar has been secured tightly by the bottom of the jar opener. After it has grabbed the top of the jar it applies pressure and is able to open the jar properly.
What kind of simple machine is a paint can opener?
A paintbrush is not a machine in the sense that the word "machine" is used in elementary physics. Machines are used to do work, usually by providing leverage in some way.
In that way, Atwood's machine, a collection of ropes and pulleys, is a machine, but the gasoline engine is not.
This is merely an issue of terminology and classification and has historical roots. It is not a statement of a basic law of science.
How have can openers changed technology?
They have changed by getting better handles, improved gears and sharper cutters.
Kinda-sorta, but probably not.
Anything that has a stand-by mode, a built-in clock, A LED shining or anything like that will use a littlepower as long as it's plugged in.
It'll use a lot more power while actually being used, but it's possible that all that time on stand-by together will require as much energy as a few moments of usage.
A blender or a can opener are usually simple devices that don't have any clocks or indicator lights, so they are quite unlikely to use any power while in stand-by mode. A TV however will pull a few watts even if it isn't turned on.
What is the disadvantage of can opener?
It allows you to actually eat the food that's been canned without bashing the can open or chopping it open with something sharp. Both of these methods would result in you hurting yourself.
How would you open a can if you did not have a can opener?
A kitchen without a can opener is like a boat without an anchor
Who invented the modern can opener?
Can manufacturers of early cans recommended using a cold chisel and hammer to open their cans, but users rarely had such tools available in the field when they wanted to eat.
The first "can openers" were often whatever device that the person already had, typically a knife or bayonet. These "can openers" were improvised in their use and were usually less than adequate.
On January 5, 1858, Waterbury native Ezra J. Warnerinvented the first tool specifically intended as a can opener (not some other tool being forced into this use). This was the first recorded patent (US patent No 19063) for a can opener. However, Warner's can opener was not a tool for household use, because it could be dangerous. Grocers opened the cans before they left the store.
The first can opener safe for household use was patented by William Lyman on July 12, 1870 (US patent No 105346).
Did Australia invent the can opener?
In short, the answer is no.
The long answer (quoted from Wikipedia):
"Dedicated can openers appeared in the 1850s and were of a primitive claw-shaped or "lever-type" design. In 1855, Robert Yeates, a cutlery and surgical instrument maker of Trafalgar Place West, Hackney Road, Middlesex, UK, devised the first claw-ended can opener with a hand-operated tool that haggled its way around the top of metal cans"
What is the purpose of the round toothed part in can openers?
Its purpose is to grip the underside of the metal edge of the can, and push it, making the can push against the cutter blade.
Where can I find a simple labeled diagram of a can opener?
I tried searching on google. the person who had answered before me didn't even try to find one on google, as I did NOT find one. I suggest you go onto a website like wikipedia, but even then I'm not sure. It's not one of the most popular objects and/or objects that need a labelled diagram so... Yeah. You will probably simply make your own diagram. Sorry I couldn't help more.
How do you sharpen a knife with can opener?
Use the unglazed edge on the bottom of a pottery plate.
ANS2:Well, that would be like trying to drink water without water. Any thing or technique to sharpen a knife would be a sharpener.If you are asking for a substitute for a whet stone, and you don't have a lot of respect for the knife, you could try a grinder or a file. Placing the blade in nitric acid will leave the edge sharp and jagged. If you have a lot of time, you could get some jeweler's rouge and polish the blade to a fine edge.
Where can one buy a OXO can opener?
OXO branded can openers can be purchased at various online sites as well as the local departmental stores or specialty stores like Bed Bath and Beyond. While it may be convenient to purchase from local stores, online sites tend to have the best prices and offer ratings as well as user testimonials if required.
