ST3.23 Tension and Centripetal Acceleration

One end of a 0.5 m string is fixed; the other end is attached to a 2 kg stone. The stone swings in a vertical circle, passing the bottom point at 4 ms-1. The string tension at this point is about:
Incorrect
Incorrect
Incorrect
Incorrect
Correct

[There is ONE correct answer above. Choose the one you think is correct and press the "Check Your Answer" button below to see if you are right.]