The bottle opener problem

You are using a bottle opener to open a coke. You apply a force at a distance of 10 cm from the fulcrum. The opener latches on to the neck at 5 cm from the fulcrum. The cap latches on with a force of 10 N. How much force would you have to apply to open it?
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  1. The underlying principle as you have learned is the conservation laws. Can you think of a situation in life which seems to violate these laws, but upon closer inspection holds true?
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  3. If you need assistance, think back to the end of the video where Zach asked a question about if momentum is conserved when the cap flies off.
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