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.
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?
1 answer