In class I lever, the distance between the fulcrum and the load is 32 cm and then distance between the fulcrum and the effort is 64 cm. What is the MА?

Given,

• Distance between the fulcrum and the load = Load arm = 32 cm
• Distance between the fulcrum and the effort = Effort arm = 64 cm

As, mechanical advantage of a lever is given by the ratio of the effort arm to the load arm i.e.,

$\text {Mechanical Advantage (M.A.)} = \dfrac{\text {Effort arm}}{\text {Load arm}}\\[1em] \Rightarrow \text {M.A.} = \dfrac {64}{32}\\[1em] \Rightarrow \text {M.A.} = 2$

So, the MА of class I lever is 2.