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Question 71219: A worker tearing down a barn, uses a pinch bar 4 ft. long with the shorter end 2in. from the fulcrum. If the worker can excert a force of 150 lbs. at one end of the pinch bar, how great a force can he excert at the other end? (Note the differences in units, 2 in. and 4 ft. Units must be the same when using the lever formula.)
w1 d1 = w2d2
I'm lost after this. Can you help?
Dorothy
Found 2 solutions by checkley75, stanbon:
Answer by checkley75(3666)   (Show Source):
Answer by stanbon(48558) (Show Source):
You can put this solution on YOUR website!A worker tearing down a barn, uses a pinch bar 4 ft. long with the shorter end 2in. from the fulcrum. If the worker can excert a force of 150 lbs. at one end of the pinch bar, how great a force can he excert at the other end?
w1 d1 = w2d2
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w1*2 = 150*48
w1 = 3600 lbs. of force
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Cheers,
Stan H.
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