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Author Question: Consider a uniform hoop of radius R and mass M rolling without slipping. Which is larger, its ... (Read 107 times)

michelleunicorn

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on: Jul 29, 2018
Consider a uniform hoop of radius R and mass M rolling without slipping. Which is larger, its translational kinetic energy or its rotational kinetic energy?
 
  A) Translational kinetic energy is larger.
  B) Rotational kinetic energy is larger.
  C) Both are equal.
  D) You need to know the speed of the hoop to tell.

Question 2

Starting from very far away, an object is moved closer and closer to a concave lens, eventually reaching the lens. What happens to its image formed by that lens? (There could be more than one correct choice.)
 
  A) The image gets closer and closer to the lens.
  B) The image gets farther and farther from the lens.
  C) The image always remains virtual.
  D) The image eventually changes from real to virtual.
  E) The image keeps getting larger and larger.


LegendaryAnswers

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

C

Answer to Question 2

A, C, E


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