HW 1 Prob 2_8 extra - PROBLEM 2.8 For the hook support of...

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Unformatted text preview: PROBLEM 2.8 For the hook support of Problem 2.1, knowing that the magnitude of P is 75 N, determine by trigonometry (a) the required magnitude of the force Q if the resultant R of the two forces applied at A is to he vertical, ([9) the corresponding magnitude of R. PROBLEM 2.1 Two forces P and Q are applied as shown at Point A of a hook support. Knowing that P=75 N and Q2125 N, determine graphically the magnitude and direction of their resultant using (a) the parallelogram law, (b) the triangle rule. “ ________________—___._____‘___.___—____—_——J SOLUTION 20° 32:15 N ' I I E 4 s. \ 35° ‘3 Using the triangle rule and law of sines: Q 75 N = = 44.7 N 1 (a) sin 20° sin35° Q a (b) a+20°+35°=180° a=180°——20°—35° = 125° R - 75N R2107.1N4 sin125° ” sin35° W—A ...
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