SOLUTION: a 3M BAR is used to lift a stone. A 90 kg person exerts all his weight to one end of the bar which is 2 1/2 m from the fulcrum and balances the stone. The weight of the stone is ap

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Question 181208: a 3M BAR is used to lift a stone. A 90 kg person exerts all his weight to one end of the bar which is 2 1/2 m from the fulcrum and balances the stone. The weight of the stone is approximately?
PLEASE I AM ASKING FOR HELP, WHO CAN ANSWER MY PRAYER.......
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a 3M BAR is used to lift a stone. A 90 kg person exerts all his weight to one end of the bar which is 2 1/2 m from the fulcrum and balances the stone. The weight of the stone is approximately?
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weight*length = weight*length
90*(5/2) = x*3
30(5/2) = x
x = 75 kg (the weight of the stone)
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Cheers,
Stan H.
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