Question

Your answer is partially correct. Try again. An experimental device imparts a force of magnitude F = 50 lb to the front edge of the rim at A to simulate the effect of a slam dunk. Compute the moment of the force F about point and about point B. The moments are positive if counterclockwise, negative if clockwise. Finally, locate a point C from the base at O to the location on the ground where the force imparts zero moment. The distance d from point O to point C is positive if C is to the right of O, and negative if to the left. 36" - -28"- OS Answers: Mer 138.8bft Ms = 129 1-4 d = 6.25

I keep getting either 6.25 or -6.25 and it is neither of them

Answer 1

(1) Applying Momentof couple equation wrto the base O. Mo=F/(10 feet) - F,(36inch+28 inch) = F cos 0(10 feet) - F sin 0(64 inch) =(501) to the nofe)-(501) Sinch)( . Obafet) = 38.8 1b.ft (2) Applying Momentof couple equation wrto the point B. My=-F (12inch) – F,(28inch) =- Fcos (12inch) - F sin ( 28inch) =-15010) Hazinch) (open)-(sob), (inch)( ofice =-125 1b.ft (c)Applying Momentof couple equation wrto the point C. Mc= F cos 0(10feet) - F sin 0(36inch+28inch+d) = 0 (son) ]cofet)-(501| 1 | Catinetd) = 0 (5)(10feet)= (8){ s4inch ( bet +] d =0.938feet $ 0.94 feet