A 3.00-m-long ladder, weighing 200 N, rests against a smooth vertical wall with its base on a horizontal rough floor, a distance of 1.20 m away from the wall. If the center of mass of the ladder is 1.40 m from its base, what frictional force must the floor exert on the base of the ladder in order for the ladder to be in static equilibrium?
A. 93.3 N
B. 130 N
C. 40.7 N
D. 102 N
Answer:C
A 3.00-m-long ladder, weighing 200 N, rests against a smooth vertical wall with its base on a horizontal rough floor, a distance of 1.20 m away from the wall. If the center of mass of the ladder is 1.40 m from its base, what frictional force must the floor exert on the base of the ladder in order for the ladder to be in static equilibrium?
A. 93.3 N B. 130 N C. 40.7 N D. 102 N