Explanation Given information : The given force ( F ) is 200 lb. Assumption: The anticlockwise rotation is positive. Show the free body diagram of the couple forces acting on the frame as in Figure (1). Using Figure (1), Determine the resultant couple moment by taking moment about point A . ( M R ) C = { − F 1 cos θ d y 1 − F 1 sin θ d x 1 + F 2 cos θ d y 2 − F 2 sin θ d x 2 + F cos θ 1 × ( d y ) 1 + F sin θ 1 × ( d x ) 1 − F cos θ 2 × ( d y ) 2 + F sin θ 2 × ( d x ) 2 } (I) Here, the downward inclined force is F 1 , the upward inclined force is F 2 , the angle for the force F 1 and F 2 is θ , the vertical distance for the inclined force F 1 is d y 1 , the horizontal distance for the inclined force F 1 is d x 1 , the vertical distance for the inclined force F 2 is d y 2 , the horizontal distance for the inclined force F 2 is d x 2 , the vertical distance for the upward inclined force F is ( d y ) 1 , the horizontal distance for the upward inclined force F is ( d x ) 1 , the vertical distance for the downward inclined force F is ( d y ) 2 , and the horizontal distance for the downward inclined force F is ( d x ) 2

13th Edition

ISBN: 9780132915540

Author: Russell C. Hibbeler

Publisher: Prentice Hall

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Chapter 4.6, Problem 79P

To determine

The resultant couple moment.

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Chapter 4.6, Problem 78P

Chapter 4.6, Problem 80P

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Chapter 4 Solutions

Engineering Mechanics: Statics

Ch. 4.4 - F41. Determine the moment of the force about point...Ch. 4.4 - F42. Determine the moment of the force about point...Ch. 4.4 - F43. Determine the moment of the force about point...Ch. 4.4 - Neglect the thickness of the member.Ch. 4.4 - F45. Determine the moment of the force about point...Ch. 4.4 - F46. Determine the moment of the force about point...Ch. 4.4 - F47. Determine the resultant moment produced by...Ch. 4.4 - F48. Determine the resultant moment produced by...Ch. 4.4 - F49. Determine the resultant moment produced by...Ch. 4.4 - Express the result as a Cartesian vector.

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