Question

Find the moment of the 340 lb force with respect to : a) point A; b) line AB; c) find the perpendicular distance from A to the line of action of the force.

problem 6: Find he moment of the 340 lb force with respect to a) point A. b) ne AB; c) find the perpendicular distance from A to the ne of action of the force. (s. 8.01 AIA, 8, 9) 310 (0, 3) (A5, 0,9)

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Solution: The force due to point A is, 1 lb force 4.45N 340 lb force 1512.4 N8 F=1512.4 N 1512.4 NI 12-8.9k 12i -8j +9k 17 -8he moment of the force at the point A is 1067.5 -711.7 800.6 (6404.8+6405.3)-j(0-9607.5)+(0-8540)k 12810.1N mi 9607.5 Nmy -85To find the perpendicular distance from the point A to the line of action of force 1512.4 18147.6 = 0.083 m Hence the perpend

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