In a lever, fulcrum is at one end at a distance of 30 cm from the load and effort is at the other end at a distance of 90 cm from the load. Find the mechanical advantage of the lever.
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Step-by-step explanation:
Load arm = 30cm
Effort arm = 90cm+ 30cm
= 120cm
Mechanical advantage =
\frac{Effort\ arm}{Load\ arm}=\frac{120}{30}=4
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