2. A crossed belt goes around the pulleys A and B having radii of 14 cm and 7 cm, respectively. The distance between centers of the two pulleys is 36 cm. a) Determine the angle of contact of the belt on the bigger pulley. b) Determine the length of the common internal tangent. c) Determine the total length of the belt. ----- 14 21 ----- ---

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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.