A horizontal boom is supported at its left end by a frictionless pivot. It is held in
Question:
(a) Show that the tension in the cable is the same whether the cable makes an angle 6 or an angle 180 - 6 with the horizontal, and that the horizontal force component exerted on the boom by the pivot has equal magnitude but opposite direction for the two angles.
(b) Show that the cable cannot be horizontal.
(c) Show that the tension in the cable is a minimum when the cable is vertical, pulling upward on the right end of the boom.
(d) Show that when the cable is vertical, the force exerted by the pivot on the boom is vertical.
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Related Book For
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073398242
11th edition
Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self
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