Consider the beam shown in (Figure 1). EI is constant. Assume B and C are rollers and A and D are pinned. Assume w = 3.2 k/ft. Figure -20 ft T a 8 ft < 1 of 1 > ▼ Determine the moment MBA acting on span AB at B measured clockwise. Express your answer using three significant figures. Enter positive value if the moment is clockwise and negative value if the moment is counterclockwise. MBA= Submit Part B X Incorrect; Try Again; 5 attempts remaining Mnc = Part C MCB = IVE 195| ΑΣΦ.11 Ivecto → Determine the moment MBC acting on span BC at B measured clockwise. Express your answer using three significant figures. Enter positive value if the moment is clockwise and negative value if the moment is counterclockwise. Submit Previous Answers Request Answer Part D McD = VE ΑΣΦ.IIIvec VE ΑΣΦ. 11 vec Determine the moment MCB acting on span BC at C measured clockwise. Express your answer using three significant figures. Enter positive value if the moment is clockwise and negative value if the moment is counterclockwise. Request Answer 4 → XX 15] ΑΣΦ.41 | vec ? 4 ORCI ? ? k.ft Determine the moment Mcp acting on span CD at C measured clockwise. Express your answer using three significant figures. Enter positive value if the moment is clockwise and negative value if the moment is counterclockwise. k.ft [w] ? k.ft k.ft

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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.