A `1kg` ball is suspended in a uniform electric field with the help of a string fixed to a point. The ball is given a charge `sqrt(5)` coulomb and the string makes an angle `37^(@)` with the vertical in equilibrium position. In the equilibrium positoin the tension is double the weight of the ball. Find the magnitude of the electric field in `N//"Coul"`.

Answer

6

Explanation

`qE=mgsqrt(1+4+2(1)(2)cos(180-37))`