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fenstera6

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- Homework Statement
- A 4.4-cm-diameter, 24 g plastic ball is attached to a 1.2-m-long string and swung in a vertical circle. The ball’s speed is 6.1 m/s at the point where it is moving straight up. What is the magnitude of the net force on the ball? Air resistance is not negligible.

- Relevant Equations
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I'm trying to solve this problem using an rtz coordinate system, and Newtons second law. I know that ma

_{r}= (m(v)^{2})/r. I'm failing to understand how mg and the drag force affects the solution and how I would set it up. I know if it was at the bottom of the circle that mg would be added to the tension force, and if it was at the top it would be subtracted, is it irrelevant at the sideways position?