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- The resultant of two vectors is 20 units long and makes angles of 20o and 50o with thetwo vectors, respectively. Show graphically how you obtain the magnitudes of the twovectors.For F = 51 lb, compute the combined moment of the two forces about (a) point O, (b) point C, (c) point D. The moments are positive if counterclockwise, negative if clockwise.Find the centroid (?̅ and ?̅) Compute moments of intertia about x-axis
- à ở từ if a = 2.8i+ 5.7 j – 8.1k, = b = − 4.9î + 4.4ĵ + 3.8k, and What are (a) the x component, (b) the y component, and (c) the z component of 7 1.8î + 2.8ĵ + 4.6k . (d) Calculate the angle between and the positive z axis. (e) What is the component of a along the direction of b? (f) What is the magnitude of the component of a perpendicular to the direction of b but in the plane of a and b? =The coplanar force system shown has a resultant of 400N acting in the direction toward a point with coordinates (5,6). Determine the characteristics of the unknown force W.(u) 10.7 iI/ 5 12. For two vectors to give a maximum resultant, the angle between them should be