The resultant couple of the three couples acting on the triangular block is to be zero. Suppose that R = 190 N (Figure 1) Determine the magnitude of force F. Express your answer to three significant figures and include the appropriate units. ? HA F = Value Units Submit Request Answer Figure < 1 of 1 Part B Determine the magnitude of force P. Express your answer to three significant figures and include the appropriate units. ? HA P = Value Units 300 mm 500 mm 600 mm -R Submit Request Answer 400 mm

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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.