The force F acts on the gripper of the robot arm. The moments of F about points A and B are 180 N · m and 70 N · m, respectively—both counterclockwise. (a) Determine F and the angle θ.

The force of F = 80 lb acts along the edge DB of the tetrahedron. Determine the magnitude of the moment of this force about the edge CA. If the moment of the force F about the edge CA of the tetrahedron has a magnitude of M = 200 lb-ft and is directed from C toward A, determine the magnitude of F. D 5 ft A F 15 ft 8 ft 10 ft 4 ft B

Q2/ F=4 kN Determine the projections Pa and Ph of the 4-kN force F on to the a- and b- axes. 30° 40° T15° --- - ----- Q3/ The force of magnitude F acts along the edge of the triangular plate. Determine the moment of F about point O, using scalar method (Varignon's theorem) only. h F b.

The 340-lb force is applied at point A of the bracket. Determine the moments of this force about point B, about point C, and about the line BC. "Ac k) lb-in. k) lb-in. B 16" 142° 21" Answers: Mg = (i Mc-(i MBC= 18" + i+ 340 lb Mi lb-in. j+ j+ Mi