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You use a 160 cm plank to lift a large rock. If the rock is 20cm from the fulcrum, what is the plank’s IMA?
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You use a 160 cm plank to lift a large rock. If the rock is 20cm from the fulcrum, what is the plank’s IMA?

User Cristian Colorado
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1 Answer

4 votes

Answer:

IMA = 8

Step-by-step explanation:

Given the following data:

Length of plank = 160cm

Length of resistance = 20cm

To find the ideal mechanical advantage (IMA);


IMA= \frac {length \; of \; effort}{length \; of \; resistance}


IMA= \frac {160}{20}

IMA = 8

User Paul Straw
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4.6k points
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