The homogeneous disk of mass m is resting on the right-angled supporting surfaces shown. The tension P in the cord is very gradually ncreased from zero. If the friction at both A and B is characterized by us = 0.23, what happens first - does the homogeneous disk slip in place or does it begin to roll up the incline? Determine the value of P at which this first movement occurs. Assume = 25° B 0.75r/ H₂ Answer: P ma

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Laws of Equilibrium

A body is said to be in equilibrium if the system of forces acting on the body tends to keep the body at rest, in other words, there is no translation motion or net torque on the body. Under such conditions, the equilibrium conditions are to be applied to analyze the condition. The branch of mechanics that deals with this condition is known as 'statics'. Under equilibrium, there are no net forces on the body.