1,14 An aireraft tow bar is positioned by means of a single hydraulic cylinder connected by a 25-mm-diameter steel rod to two identical arm-and-wheel units DEF. The mass of the entire tow bar is200...

Why are there no reaction forces of Fx and Fx at the joint F?

Extracted text: 1,14 An aireraft tow bar is positioned by means of a single hydraulic cylinder connected by a 25-mm-diameter steel rod to two identical arm-and-wheel units DEF. The mass of the entire tow bar is200 kg, and its centerof gravityis located at G For- the position shown, determine the normal stress in the rod. Problem 1.14 Dimensions in mm 1150 100 450 B |E 250 850 500 675 825 FREE BODY ENTRE Tow BAR : (200 kg)(4.81 m/s?) = 1962.0O N 1150 mm Ax +5EMA = 0 : A 85OR 1150(1962.00 N) R 850 mm R = 2654,5 N FREE BODY - BOTH ARM WHEEL UNITS: tan d 675 メニ8.4270° +5 EMe = 0 : 100 mm (FeDcos x)(sso) - R(5o0) : 450 mm Ex 500 FeD 550 cos 8.4270 (2654.5 N) = 2439.5 N (COMP.) 2439.5 N TI (0.0125 m)? S00mm ' 675mm FeR Aco R= 2654.S KN 4.9697 * 1o Pa 4.97 MPa