SOLUTION: A crowbar is 4 1/2 feet long. Where must the fulcrum be placed so that a weight of 1600 pounds can be moved by exerting a force of 200 pounds?

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Question 636729: A crowbar is 4 1/2 feet long. Where must the fulcrum be placed so that a weight of 1600 pounds can be moved by exerting a force of 200 pounds?
Answer by sachi(548) About Me  (Show Source):
You can put this solution on YOUR website!
let the wt 1600 lb is at x' from fulcrum & the force is at (4.5-x)'
so 1600*x=200*(4.5-x)=900-200x
or 1800x=900
or x=900/1800=0.5'
7 the force is at 4.5-.5=4' ans