1. the design moment strength of W24*104 with unbraced length Lb=11ft is equal to A. 1170k-ft B. 1069k-ft C. 1340k-ft D. 1290k-ft   2. the yield moment My about the strong axis of W33*201 with Fy=50ksi is equal to A. 2858k-ft B. 2563k-ft C. 2292k-ft D. 2058k-ft

Q: Plz don't use chat gpt

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System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.