3_2_h

If it takes a force of F = 125 lb 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?

3_2_g

 If the resultant moment about point A is 4800 N m clockwise, determine the magnitude of F3 if F1 = 300 N and F2 = 400 N

3_2_f

The tool at A is used to hold a power lawnmower blade stationary while the nut is being loosened with the wrench. If a force of 50 N is applied to the wrench at B in the direction shown, determine the moment it creates about the nut at C. What is the magnitude of force F at A so that is creates the opposite moment about C?

3_2_e

The Snorkel Co. produces the articulating boom platform that can support a weight of 550 lb. If the boom is in the position shown, determine the moment of this force about points A, B, and C.

3_2_d

A force of 40 N is applied to the wrench. Determine the moment of this force about point O. Solve the problem using both scalar analysis and a vector analysis.

3_2_c

If the force F = 100 N, determine the angle  (090o) so that the force develops a clockwise moment about point O of 20 Nm.

3_2_b

Determine the magnitude and directional sense of the resultant moment of the forces at A and B about point P

3_2_a

Determine the magnitude and directional sense of the resultant moment of the forces at A and B about point O.