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A ball is held at rest in position A by...

A ball is held at rest in position A by two light strings. The horizontal string is now cut and the ball swings to the position B as shown in figure. If 5kg is the mass of the ball and g is the acceleration due to gravity, then tension in the string attached to the bob in position A is `(xg)/(costheta)` The value of 'x' is

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