4-55 Determine the moment of the force F about an axis extending between A and C. Express the result as a Cartesian vector. 4 ft 3 ft 2 ft AF=(4+12j- 3k) lb

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2-1: Find Moment about point A 2-2: Find Moment about point B

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2-53. Express each force as a Cartesian vector. F = 200 N F2 = 150 N F = 90 N 60° 45°

2 2. Express the vector a (below) in terms of i and j unit vectors. 3 22L 30°

A force acting through the point (X, Y, Z) where X = 4, y = -3 and Z = 8 is given by the vector: F = ai + bj + ck where a = 7, b = 4, c = -4 Determine the magnitude of the moment produced by F about the point (1,2,3). Give your result to three decimal places.

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Replace the force system acting on the pipe assembly by a resultant force and couple moment at point O. Express the results in Cartesian vector form.

Determine the resultant couple moment of the two couples that act on the pipe assembly. The distance from A to B is d = 400 mm. Express the result as a Cartesian vector.