Describing a bottle opener and the way it functions.

• May 17th 2010, 11:01 AM
MathBlaster47
Describing a bottle opener and the way it functions.
My question is deceptively simple seeming, all I have to do is describe how a bottle opener opens a bottle.

I think I have a good explanation worked out, but I just want to make sure it all adds up and is well presented.

http://img38.imageshack.us/img38/5733/question2i.jpg

My explanation is this:

The bottle opener uses the top of the bottle as a fulcrum so that when the handle is pulled up, pressure is applied to the cap stressing the metal, forcing it to bend and release the bottle.

Another part to the question is:
Explain why the bottle cap opener does not violate the law of conservation of energy.

When the cap is bent by the opener a small amount of heat is produced.
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Are my answers correct and complete?

Thank you!
• May 17th 2010, 11:43 AM
Pim
The second seems absolutely correct to me.
• May 17th 2010, 12:43 PM
MathBlaster47
Thanks Pim!

Would this be a good revision?

The bottle opener uses the top of the bottle cap as a fulcrum giving the lever handle leverage.When the handle is pulled up, pressure is applied to the cap stressing the metal, forcing it to bend and release the bottle.

I realize that I over used the word lever...but it can't be helped. (Nerd)
• May 17th 2010, 10:52 PM
unstopabl3
"Fulcrum giving leverage to the handle"

I think that would be better.

Other than that, it looks good!