Give one example of class I lever where the mechanical advantage is more than 1.

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Solution

The mechanical advantage of lever is equal to the ratio of effort arm to the load arm.𝑀𝑒𝑐ℎ𝑎𝑛𝑖𝑐𝑎𝑙 𝑎𝑑𝑣𝑎𝑛𝑡𝑎𝑔𝑒 𝑜𝑓 𝑙𝑒𝑣𝑒𝑟
$= \frac{e f f o r t a r m}{L o a d a r m}$
For, 𝑀.𝐴. >1
𝐸𝑓𝑓𝑜𝑟𝑡 𝑎𝑟𝑚 >𝐿𝑜𝑎𝑑 𝑎𝑟𝑚
Plier is an example of a class I which has effort arm greater than load arm.

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