One end of a string of length L and cross sectional area A is fixed to a support and the other end is fixed to a bob of mas m. The bob is revolved in a horizontal circle of radius r with an angular velocity omega such that the string makes an angle theta with the vertical. Young's modulus is Y. The stress in the string is

One end of a string of length L and cross sectional area A is fixed to

1.	One end of a string of length L and cross sectional area A is fixed to a support and the other end is fixed to a bob of mas m. The bob is revolved in a horizontal circle of radius r with an angular velocity omega such that the string makes an angle theta with the vertical. Young's modulus is Y. The stress in the string is
Answer» `(MG)/A` `(mg)/A(1-r/l)` `(mg)/A(1+r/l)` `(mg)/A(r/l)` ANSWER :A