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Q.

A bottle opener is an example of a ____ lever.


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Detailed Solution

A bottle opener is an example of a class-two lever.
“In a class – two levers, the load is located between the fulcrum and the effort.” Therefore, class–two levers are more efficient machines, and they are used as force multipliers. Therefore, the mechanical advantage of class-two levers is always greater than one. Examples of class–two levers are nutcrackers, wheelbarrows, bottle openers, etc.
                            
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