A 0400-Kg Rock Is Swung in a Circular Path and in in a Vertical

Multiple Choice

A 0.400-kg rock is swung in a circular path and in a vertical plane on a 0.25-m length string.At the top of the path,the angular speed is 12.0 rad/s.What is the tension in the string at that point?

A) 18.32 N
B) 10.48 N
C) 14.4 N
D) 47.04 N
E) ​226.48 N