Four ropes are attached to a crate and exert the forces shown. If the forces are to be replaced with a single equivalent force applied at a point on line AB, determine 

(a) the equivalent force and the distance from A to the point of application of the force when α =30°, 

(b) the value of a so that the single equivalent force is applied at point B.

 

Transcribed Image Text:

160 lb 100 lb 46 in. B 25 400 lb 90 lb 36 in. 65° 10 in. C D 66 in. Fig. P3.156 160 lb 100 lb 46 in. B 25 400 lb 90 lb 36 in. 65° 10 in. C D 66 in. Fig. P3.156