Question

Give one example of class I lever where the mechanical advantage is equal to 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
Beam balance is an example of a class I which has mechanical advantage equal to 1.
In the beam balance load arm is equal to effort arm.