Chapter 4, Problem 33P

The wrench is used to tighten a nut on the wheel. Determine the moment of the 120-lb force about the origin O. Express your answer in vector form.

The force F=2i12j+5klb acts along the line AB. Recognizing that the moment of F about point B is zero, determine the x- and z-coordinates of point B.

The wrench is used to loosen the bolt. Determine the moment of each force about the bolt’s axis passing through point O.

The 30N force P is applied perpendicular to the portion BC on the bent bar . Determine The moment of P about point B and about point A.

The pipe assembly is subjected to three forces of F1 = {3.00, 4.00, -2.00} kip, F2 = {0, 0,-4.00} kip, and F3 = {-3.00, 0, 0} kip. Determine the sum of the moment of the forces 1) about x-axis (the unit vector of x is i) and 2) about line AC. Express the result as a Cartesian vector.

Determine the moment of the force F about point P. Express the result as a Cartesian vector.

The 4-kN force F is applied at point A. Compute the moment of F about point 0, expressing it both as a scalar and as a vector quantity. Determine the coordinates of the points on the x- and y-axes about which the moment of F is zero. y, m A (1.2, 1.5) F=4 kN

Determine the combined moment of the two forces about point about x, y, and z axis. The magnitudes of the forces are P = Q = 28.20 4 m 1. 3 m 2 m 2 m B

3- If the two forces F, (100i - 120j + 75k) Ib and F, = {-200i + 250j + 100k) lb act at A, determine the resultant moment produced by these forces about point O. Express the result as a Cartesian vector.