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What is the IMA of a lever whose resistance arm is 5 cm long if the effort arm is 0.5 m long and the load is 9.20 N?


a)0.1

b)0.9 N

c)10

d)90 N

Verified Answer :

xEngineerOrg

The Ideal Mechanical Advantage (IMA) of a lever is the ratio between the length of the effort arm and the length of the resistance (load) arm:
\(IMA=\frac{L_e}{L_r}=\frac{50}{5}=10\)

Correct answer c) 10

Notice that I've transformed the effort arm from 0.5 meters in 50 cm, to match the unit with the resistance arm.

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