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In the fig above A lever of length 200m is used... - JAMB Physics 1993 Question

In the fig above,A lever of length 200m is used to lift a load of mass 180kg. The pivot at P is 20m from the load. what minimum force F must be applied at the end of the lever [g = 10ms-2]
A
9N
B
18N
C
20N
D
200N
correct option: d
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