The diagram shows a 3 pin frame with dimensions L1 = 10.0 m and L2 = L3 = 4.3 m. A uniformly distributed load (UDL) is applied between points A and B with a magnitude w1 = 47.9 kN/m Caiculate the position where the moment is at a maximum (i.e. the position of zero shear) between points A and B and give your answer as the distance to point A, to one decimal place in metres but do not include units in your answer. Simply give your answer as a number (no plus or minus sign). L2 L3 B w1 L1

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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.