A 17-kg ladder has a center of mass at G. If the coefficients of friction at A and B are A = 0.3 and B = 0.2, respectively, determine the smallest horizontal force that the man must exert of the ladder at point C in order to push the ladder forward.

A

F = 120.2 N

B

F = 288 N

C

F = 166.8 N

D

F = 204 N

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