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To open the lid of bottle, 50 N force is...

To open the lid of bottle, 50 N force is needed, Siri wanted to open the lid with her maximum effort of 10 N, which of the following openers is suitable for doing it?

Text Solution

Verified by Experts

The correct Answer is:
`E_(A)=10N,E_(B)=12.5N,E_(C)=10 N,` Either A or C.
`M_(A)=(10)/(2)=5`
`M_(B)=(8)/(2)=4`
`M_(C)=(15)/(3)=5`
`E_(A)=(L)/(MA)=(50)/(5)=10N`
`E_(B)=(L)/(MA)=(50)/(4)=12.5N`
`E_(C)=(L)/(MA)=(50)/(5)=10N`
She can use opener A or C to open the lid.
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