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A bob of weight 3N is in equilibrium und...

A bob of weight `3N` is in equilibrium under the action of two string 1 and 2 (figure) . Find the tension forces in the string.

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A uniform rod of mass m and length l is in equilibrium under the action of constraint forces, gravity and tension in the string. Find the a. frictional force acting on the rod. b. tension in the string. c. normal reaction on the rod. Now, the string is cut. Find the d. angular acceleratiion of the rod just after the string is cut. e. normal reaction on the rod just after the string is cut.

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(a) A box of weight 10sqrt(3) N is held n equilibrium with the help of two strings OA and OB as shown in figure-1. the string OA is horizontal. Find the tensions in both the stings. (b) If you can change location of the point A on the wall and hence the orientation of the string OA without altering the orientation of the string OB as shown in figure-II. what angle should the string OA make with the wall so that a minimum tension is developed in it?

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In the given figure the tension in the string OB is 30N. Find the weight 'W and the tension in the string OA.