One end of a string of length 1 m is tied to a body of mass `0.5` kg. It is whirled in a vertical circle with angular velocity 4 rad `s^(-1)`. Find the tension in the string when the body is at the lower most point of its motion. (take, g = 10 `ms^(-1)`)
A. 3 N
B. 5 N
C. 8 N
D. 13 N
