Sol Cap 02 - Edicion 8

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Chapter 2, Solution 66.
Free-Body Diagram: B (a) Have: T + F + T = 0
where magnitude and direction of
of
F AB is known.
BD AB BC
T BD are known, and the direction
Then, in a force triangle:
By observation, T BC is minimum when α = 90.0°⊳
(b) Have T = ( 310 N) sin ( 180° − 70° − 30°
)
BC
= 305.29 N
TBC
= 305 N ⊳
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr.,
Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell
© 2007 The McGraw-Hill Companies.