A 0.30-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. 7.9 N
b. 16 N
c. 18 N
d. 83 N


a

Physics & Space Science

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