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# qz29 - ME— 98‘ i fWer ng Q"\=€ 3 E5 v5...

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Unformatted text preview: ME— 98‘ i fWer ng Q"\\=€ 3 E5 \ v5 ENGINEERING MECHANICS - STATICS, 2nd. Ed. W. F. RILEY AND L. D. STURGES 4-42* Two forces aye applied to an eyebar as shown in Fig. P4-42. Determine (a) The moment of force F1 about point A. (b) The moment of force F2 about point B. Fig. P4-42 SOLUTION (3) F1 = 250(cos 20° 1 + sin 20° 3) = 234.92 1 + 35.51 3 N = 325 T - 150 3 mm. F x F1 = (325 i — 150 j) x (234.92 T + 35.51 3) = 63,029 E N'mm a 63.0 E N'm a 63.0 N-m 5 A _ 400(cos 65° 3 - sin 65° 3) = 169.05 T — 362.52 J N A A = 325 1 + 100 J mm P x F2 = (325 i + 100 j) x (169.05 1 - 362.52 3) = -134,724 E N'mm a -134.7 E N-m a 134.7 N-m D )8} ...
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