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The force needed to loosen a bolt varies inversely with the length of the handle of the wrench used. A wrench with a handle length of 9 inches requires 375 pounds of force to loosen a certain bolt. A wrench of 15 inches will require how many pounds of force to loosen the same bolt?

 
gueesstt  Apr 14, 2018
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Each handle will exert the same FOOT-POUNDS of torque to loosen the bolt...

 

9/12 ft * 375 lbs = 281.25 foot-pounds  of torque required

 

15/12 ft * ? lbs = 281.25 ft-lbs      solve for ? = 225 lbs

 
ElectricPavlov  Apr 14, 2018

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