{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# SOLN_4 - *4-12 To correct a birth detect the tibia of the...

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: *4-12. To correct a birth detect, the tibia of the leg is straightened using three wires that are attached through holes made in the bone and then to an external brace that is worn by the patient. Determine the moment of each wire 0.1}: force about joint A. at: ‘ F2=8N _ u - _ . ,3; , F=6N (MA)l - 4m 15 (0.15)+4sm15°(0.02) _ 0.600N m) Ans 03 a > 'a.égaso° V; (Mn: = 3(040) = 3.2014. m) Ans " 0.2m I - z: (MA): = 6cos 30° (0.75) — 65in30"(0.015) = 3.85N- m) Ans 4-29. If the resultant moment about point A is 4800 N - m clockwise, determine the magnitude of F3 if F1 = 300 N and 30° F2 = 400 N. F1 F’ T +21% = 0; 4800 = 300(cos30°)(2) + 400 sinGO°(5)+F3 (3(5) ~5®4 173' = 1592.709 N = 1.59kN Ans F3 *4-36. Determine the moment of the foroeFatA about r _ { _1 5i + 6' + 2k} m point 0. Express the result as a Cartesian vector. U _ ' J r“ = 1/(—1.5)2 + 61 + 22 = 6.5m i j k M0 = rmx F = —2.5 ~3 6 . —g—;§-(13) ﬁns) 5—503) M0 = {—84i — 8j — 39k} kN-m Ans 4-58. The hood of the automobile is supported by the strut AB, which exerts a force of F = 24 lb on the hood. Determine the moment of this force about the hinged axis y. r={4i}m F = 24[_i";21i_] (—2)= + (2)2 + (4)2 = {—9.80i + 9.80j + 19.60k} lb o 1 0 My = 4 o o = 43.411345: —9.30 9.80 19.60 M, = { —78.4j} lb‘fl: Ans 4-77. The ends of the triangular plate are subjected to three couples. Determine the magnitude of the force I" so that the resultant couple moment is 400 N-m clockwise. 0-5 0.5 = EM; - = _ _ (“Wt 400 “((305 40°) F(cos 40“) 250(1) F=830N Am 4-81. Determine the resultant couple moment acting on the beam. Solve the problem two ways: (a) sum moments about point 0; and (b) sum moments about pomt A. (a) , (+ M; =2Mo; M, = 8 cos 45"(1.8)+8 sin 45“(0.3)+2 cos 30°(1.8) —2 sin 30°(o.»3)—2 cos 30°(3.3)-a cos455(3.3) MR=—9.69kN- m=9.69kN- In) Am 0)) ‘ £+ Ml =ZM; M; = 85in45°(0.3)—8¢os45°(1.5) -2cos\$0°(l.5) —25in30"(0.3) =—9.69kN- m=9.69kN- m l ' An. ...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

SOLN_4 - *4-12 To correct a birth detect the tibia of the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online