310. When are couples said to be like and when unlike ? When will two unlike couples balance each FORCES- MOMENTS. 85 other ? (1) If a system of forces is represented in magnitude and position by the sides of a plane poly- gon taken in order, show that the system must be equivalent to a couple. (2) If the sides of a parallelo- gram taken in order represent a system of forces act- ing upon a body, express the moment of the couple to which the system of forces is equivalent.

310. When are couples said to be like and when unlike ? When will two unlike couples balance each FORCES- MOMENTS. 85 other ? (1) If a system of forces is represented in magnitude and position by the sides of a plane poly- gon taken in order, show that the system must be equivalent to a couple. (2) If the sides of a parallelo- gram taken in order represent a system of forces act- ing upon a body, express the moment of the couple to which the system of forces is equivalent.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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