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Question 28910: Please help me solve this problem...
A man who can exert a force of 170 pounds on a pinch bar is just able to move a freight car weighing 60,000 pounds. If the pinch bar is 5 feet long and the short end is 1.25 inches from the fulcrum, what is the force exerted on the wheel of the car?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A man who can exert a force of 170 pounds on a pinch bar is just able to move a freight car weighing 60,000 pounds. If the pinch bar is 5 feet long and the short end is 1.25 inches from the fulcrum, what is the force exerted on the wheel of the car?
Set up a proportion:
x/170= 58.75/1.25
x=[170*58.75]/1.25=7990 pounds
Cheers,
stan H.
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