3. The figure shows three forces acting on a pin-supported rectangular plate at points A, B, and C. Use the scalar method of computing moments in this problem. a. Compute the moment of the force at A about D and write your answer in vector form (note: you can use the scalar method to find the moment). b. Compute the magnitude and orientation (0 < 0 < 180°) of the smallest force FB that creates the same moment about D that you found in part (a). c. If FB = 20 lb and 0 = 30°, compute the magnitude of the horizontal force Fc that makes the resultant moment of these three forces about D equal to zero. 16 in 24 in

3. The figure shows three forces acting on a pin-supported rectangular plate at points A, B, and C. Use the scalar method of computing moments in this problem. a. Compute the moment of the force at A about D and write your answer in vector form (note: you can use the scalar method to find the moment). b. Compute the magnitude and orientation (0 < 0 < 180°) of the smallest force FB that creates the same moment about D that you found in part (a). c. If FB = 20 lb and 0 = 30°, compute the magnitude of the horizontal force Fc that makes the resultant moment of these three forces about D equal to zero. 16 in 24 in

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter2: Basic Operations With Force Systems

Section: Chapter Questions

Problem 2.50P: The magnitude of the force F is 55 lb. Calculate the moment of F about the x-axis using (a) the...

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