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Author Question: A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass ... (Read 45 times)

washai

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on: Jul 29, 2018
A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length r.
 
  If I1 is the moment of inertia of this object with respect to an axis passing through the center of the rod and perpendicular to it and I2 is the moment of inertia with respect to an axis passing through one of the masses, it follows that
  A) I1 = I2.
  B) I1 > I2.
  C) I2 > I1.

Question 2

As you are leaving a building, the door opens outward. If the hinges on the door are on your right, what is the direction of the angular velocity of the door as you open it?
 
  A) up
  B) down
  C) to your left
  D) to your right
  E) forwards


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Danny Ewald

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

Answer: C

Answer to Question 2

Answer: B


washai

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


Danny Ewald

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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