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Author Question: A string is wrapped around a pulley with a radius of 2.0 cm. The pulley is initially at rest. A ... (Read 165 times)

azncindy619

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on: Jul 29, 2018
A string is wrapped around a pulley with a radius of 2.0 cm. The pulley is initially at rest. A constant force of 50 N is applied to the string, causing the pulley to rotate and the string to unwind.
 
  If the string unwinds 1.2 m in 4.9 s, what is the moment of inertia of the pulley?
  A)
 
  0.17 kgm2
 
  B)
 
  17 kgm2
 
  C)
 
  14 kgm2
 
  D)
 
  0.20 kgm2
 
  E)
 
  0.017 kgm2

Question 2

A current that is sinusoidal with respect to time is referred to as
 
  A)
 
  a direct current.
  B)
 
  an alternating current.


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Moriaki

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

B


azncindy619

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Reply 2 on: Jul 29, 2018
Excellent

ghepp

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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