Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 8 - Think and Solve: 48

Answer

1. a. Start with F = $m \frac{v^{2}}{r}$. The string tension T provides the net force F, and the length L is the radius of the path. $$T = m \frac{v^{2}}{L}$$ $$m=\frac{T L}{v^{2}}$$ b. Plug in values. $$m=\frac{(10 N)(2 m)}{(2 m/s)^{2}} = 5 kg$$
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