Question

58. A 0.5 kg ball is suspended to a string of length
1m and is rotated in a vertical plane by
holding one end of the string. If it is making
30 rpm, the maximum tension in the string
is (at² = 10)
1) 19.9 N 2) 9.9 N 3) 1.9 N 4) 29.9 N​

Answer 1

I didn't know the correct answer