If It Takes Force F To Pull The Nail Out Determine Crowbar

If it takes a force F to pull the nail out, determine the smallest vertical force P that must be applied to the handle of the crowbar. Hint: This requires the moment of F about point A to be equal to the moment of P about A. Why?

F = 125 lb
a = 14 in
b = 3 in
c = 1.5 in
θ1 = 20 deg
θ2 = 60 deg

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