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Author Question: A 0.40-kg mass, attached to the end of a 0.75-m string, is whirled around in a circular horizontal ... (Read 270 times)

jhjkgdfhk

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on: Jul 28, 2018
A 0.40-kg mass, attached to the end of a 0.75-m string, is whirled around in a circular horizontal path. If the maximum tension that the string can withstand is 400 N, then what maximum speed can the mass have if the string is not to break?
 a. 370 m/s
  c. 19 m/s
  b. 27 m/s
  d. 29 m/s

Question 2

A ventilation fan has blades 0.50 m long rotating at 20 rpm. What is the centripetal acceleration of a point on the outer tip of a blade?
 a. 1.1 m/s2
  c. 0.55 m/s2
  b. 2.2 m/s2
  d. 3.3 m/s2


coreycathey

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

B


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