Question

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

Answer 1

The mechanical advantage of lever is equal to the ratio of effort arm to the load arm.
𝑀𝑒𝑐ℎ𝑎𝑛𝑖𝑐𝑎𝑙 𝑎𝑑𝑣𝑎𝑛𝑡𝑎𝑔𝑒 𝑜𝑓 𝑙𝑒𝑣𝑒𝑟

$=\frac{effortarm}{Loadarm}$
For, 𝑀.𝐴. <1
𝐸𝑓𝑓𝑜𝑟𝑡 𝑎𝑟𝑚 <𝐿𝑜𝑎𝑑 𝑎𝑟𝑚
A pair of scissors is an example of a class I which has mechanical advantage less than 1.
In a pair of scissors load arm is greater than effort arm.