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Physics

In class II lever, the length of the effort is 200 cm and then length of the load arm is 50 сm. Calculate the MA.

Machines

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Answer

Given,

  • Effort arm = 200 cm
  • Load arm = 50 cm

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

Mechanical Advantage (M.A.)=Effort armLoad arm⇒M.A.=20050⇒M.A.=4\text {Mechanical Advantage (M.A.)} = \dfrac{\text {Effort arm}}{\text {Load arm}}\\[1em] \Rightarrow \text {M.A.} = \dfrac {200}{50}\\[1em] \Rightarrow \text {M.A.} = 4

So, the MА of class II lever is 4.

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