CE 2450 Chapter : Lesson 7
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3. 1 condition for the equilibrium of a particle. Static equilibrium describes an object at rest. Newton"s first law of motion states. If an object is in equilibrium. The free body diagram includes the chosen subsystem and representations for all the forces acting on the subsystem. The constant of proportionality is called a spring constant or stiffness and is represented by k. F = ks: cables and pulleys. Draw a free body diagram for the ring at e, the pulley at b, canister a and canister c. For a system to be in equilibrium, the resultant of the forces acting on the system must be zero. For the particle at the origin to be in equilibrium, the resultant force must be zero. R = (f1x + f2x f3x f4 x ) i + (f1y f2y f3y + f4 y ) j. R x = f1x + f2x f3x f4 x = 0.
