Question
Asked Oct 11, 2019
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3) You are attempting to lift a 350 kg sofa to your third-floor apartment building using a pulley system that has a mechanical advantage of 12.  Which force must be exerted by you to lift the sofa? 

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Expert Answer

Step 1

the total load is 

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F mg

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Step 2

substitute the given quantities in the above equation to calculate F

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F -(350kg) (9.8m/s -3430 N

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Step 3

the force applied...

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F MA Il

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