Asked by Chadero
A man uses a crowbar 1.5 meter long to lift a rock weighing 600 newton. If the fulcrum is 0.50 meter from the end of the bar touching the rock, how much effort must the man apply?
Answers
Answered by
MathMate
Take moments about the fulcrum and equate to zero. Solve for F=effort.
on the load side:
force = 600N
distance from fulcrum= 0.5 m
On the effort side:
force = F N
distance from fulcrum= 1.5m - 0.5 m = 1 m.
Moment equals force time distance from fulcrum, clockwise positive.
on the load side:
force = 600N
distance from fulcrum= 0.5 m
On the effort side:
force = F N
distance from fulcrum= 1.5m - 0.5 m = 1 m.
Moment equals force time distance from fulcrum, clockwise positive.
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