Chapter 4, Problem 45P

Part A If F, = {115i - 125j + 90k) lb and F2 = {-220i + 280j + 120k} lb, determine the resultant moment produced by these forces about point O. Express the result as a Cartesian vector. (Figure 1) Enter the r, y and z components of the moment of force separated by commas. V AEO vec Mo = Ib - ft Figure < 1 of 1 Submit Previous Answers Request Answer < Return to Assignment Provide Feedback 4 ft 3 ft

Given: F1={9 i - 9 j+ 10 k}lb F2={-10 i+10 j+ 10 k}lb Find: the Magnitude of the Resultant moment in (Ib.ft) generated by the forces about point O. 4 ft 5 ft 3 ft

*FIND THE MOMENT OF EACH FORCE AROUND POINT B, AND FIND THE RESULTANT AND DIRECTION MOMENT OF ALL FORCES ABOUT B

8a

2- Replace the effect of the forces, with the resultant Fv and the moment M at point D, if the force F1 acts at point A, F2 at point B and F3 at point C. A = (1,5; 1,5: 2), B = (1; 3,5; 1), C=(-1; 5,5; 0), D= (1; 1,5; -0,5), F, = (1003; - 20; 0)N, F, = (- 40; - 30; 15)N , F, = (0; -80; 120)N. F. A rA F, k i

Determine the resultant moment of the forces acting about the x, y, and z axes. Suppose that F1=250N, F2=90N, F3=105N, and F4=310N.

. In Figure 1-31, the moment of a certain force is 400 ft-lb counterclockwise about A. If the slope of this force is 3/2 and its moment about O is zero, determine the magnitude of the force. Also, if the line of action of the force pass through point B at (6', y), determine the y- component of point B? y 2' Figure 1-31

Y. -5 m 100 N 100 N -5 m 1. DETERMINE THE MOMENTS OF THE TWO FORCES ABOUT X, Y, AND Z AXES SHOWN IN THE FIGURE 3 m

The line of action of force F1 = 344 N is passing through point A(+2,+3,+1) towards B(+5,+5,+4), while that of force F2 = 422 N is through point C(+3,+1, –1) towards D(–2, –3, –4). Use a right-handed coordinate system. Determine the moment of force F1 about the origin, the moment of force F2 about the origin, the magnitude of the resultant moment of forces F1 and F2 about segment OE. Point O is the origin and point E is at (+5,+5,–3). i]k,