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 frequency 4 rad/s. The tension in the string, when the body is at lower most point of its motion, will be equal to (take, g = 10 `ms^(-1)`)

Explanation

At lower most point, the tension in the string,
`T=momega^(2)r+mg`
`=0.5xx(4)^(2)xx1+0.5xx10`
= 13 N