Chapter 4, Problem 105P

Find the moment about point A resulting from the force of the knee on the helmet, as shown. Also, find the force F at the base of the neck needed to resist this moment.

Determine the moment of the force F=40i8j+5kN about the y-axis.

Replace the loading acting on the frame by an equivalent resultant force and couple moment acting at point A. 80 lb 60 lb 3 ft 3 ft- 3 ft 3 ft B A 2 ft + 4 ft 75 lb 40 lb

Q4-Replace the force system by a resultant force and couple moment at point O. 200N 200 N

Solve the example please

4. Determine the resulting moment about point O from the forces shown. Assume the length of each side of the cube is 4m.

Replace the loading by an equivalent resultant force and couple moment at point B.

d= 3.8m (on the figure of the beam) Determine the equivalent resultant force and determine the equivalent couple moment at point O.

3. Replace the two forces acting on the post by a resultant force and couple moment at point O. Express the results in Cartesian vector form. C FB=5 kN Fp =7 kN 6 m 8m 2 m 3 m. 6 m.