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Author Question: Identical particles are placed at the 50-cm and 80-cm marks on a meter stick of negligible mass. ... (Read 343 times)

pepyto

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on: Jul 28, 2018
Identical particles are placed at the 50-cm and 80-cm marks on a meter stick of negligible mass. This rigid body is then mounted so as to rotate freely about a pivot at the 0-cm mark on the meter stick. If this body is released from rest in a horizontal position, what is the angular speed of the meter stick as it swings through its lowest position?
 a. 4.2 rad/s
  b. 5.4 rad/s
  c. 4.6 rad/s
  d. 5.0 rad/s
  e. 1.7 rad/s

Question 2

A uniform rod (length = 2.0 m) is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through the rod at a point 0.50 m from one end of the rod. If the rod is released from rest in a horizontal position, what is the angular speed of the rod as it rotates through its lowest position?
 a. 3.5 rad/s
  b. 3.8 rad/s
  c. 4.1 rad/s
  d. 2.0 rad/s
  e. 5.6 rad/s


bitingbit

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

B

Answer to Question 2

C


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pepyto

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Reply #2 on: Jul 28, 2018
Thank you!


bitingbit

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Reply #3 on: Jul 28, 2018
Always glad to help...


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