Ex.4.6 Three concurrent forces P,Q and F have a resultant of 5 lb directed forward and up to the right at 0x = 60°, Oy = 60°, ez = 45°. P equals 20 lb and passes through the origin and the point (2,1,4). The value of Q is also 20 lb and passes through the point (5,2,3). Determine the magnitude of the third force F and the angles it makes %3D %3D %D with the reference axes.

Ex.4.6 Three concurrent forces P,Q and F have a resultant of 5 lb directed forward and up to the right at 0x = 60°, Oy = 60°, ez = 45°. P equals 20 lb and passes through the origin and the point (2,1,4). The value of Q is also 20 lb and passes through the point (5,2,3). Determine the magnitude of the third force F and the angles it makes %3D %3D %D with the reference axes.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter6: Beams And Cables

Section: Chapter Questions

Problem 6.6P: Find the internal force systems acting on sections 1 and 2.

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Problem: Three concurrent forces P, Q, and F have a resultant of 5 lb directed forward and up to the right at θx= 60°, θy = 60°, θz = 45°. P equals 20 lb and passes through the origin and the point (2, 1, 4). The value of Q is also 20 lb and it passes through the point (5, 2, 3). Determine the magnitude of the third force F and the angles it makes with the reference axes.
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