The rigid bars AB and CD shown in the figure below are supported by pins at A and C and two rods as shown. If it's vertical movement is limited to 6mm and neglecting the weights of the member. Determine: The maximum force P that can be applied. The axial load at the steel rod. The maximum the formation of a steel rod. The axial load of the aluminium rod. The allowance the formation of the aluminum rod.

Q: EA - constant

A: Solution a) Solution Given Diagram

Q: internal force at member BC internal force at member BD, in N internal force at member CD, in N

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Q: LBC LAB

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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.