Question

A 0.025kg rubber stopper is swung in a horizontal circle by a 0.95 meter threat that makes 25 revolutions every 15 minutes. a) what is the stoppers speed? b) what is the acceleration? c) what is the value of the centripetal force?

Answers

Rosie
sorry not minutes but 15 seconds
Damon
T = 15/25 = .6 second

C = 2 pi R = 2 * 3.14 * .95 = 5.97 meter

a) v = C/T = 9.94 m/s

b) v^2/R = 9.94^2/.95 = 104 m/s^2
wow, 10 g

c) F = m a = .025*104 = 2.6 Newtons

Rosie
thank you for your help
Damon
You are welcome.

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