9. Consider a 1-kg brick being whirled in a vertical circle at the end of 1-meter rope. a. What critical velocity must the brick achieve in order to pass safely through the top of its circular path? b. What is the tension in the rope as it is passing through the top of its circular path? How would the critical velocity of the brick be if it were to be whirled on the C. moon where the acceleration due to gravity is 1/6th that on earth?

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Chapter1: Units, Trigonometry. And Vectors
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Hi , can I get some help with those practice questions? I’m stuck. Can you please explain the process . thank you
9. Consider a 1-kg brick being whirled in a vertical circle at the end of a 1-meter rope.
a. What critical velocity must the brick achieve in order to pass safely through
the top of its circular path?
b. What is the tension in the rope as it is passing through the top of its circular
path?
How would the critical velocity of the brick be if it were to be whirled on the
moon where the acceleration due to gravity is 1/6th that on earth?
С.
10. While driving to work you pass over a "crest" in the road that has a radius of 30
meters
30 meters
a.
How fast would you need to be traveling to experience apparent
"weightlessness" while passing over the crest?
Transcribed Image Text:9. Consider a 1-kg brick being whirled in a vertical circle at the end of a 1-meter rope. a. What critical velocity must the brick achieve in order to pass safely through the top of its circular path? b. What is the tension in the rope as it is passing through the top of its circular path? How would the critical velocity of the brick be if it were to be whirled on the moon where the acceleration due to gravity is 1/6th that on earth? С. 10. While driving to work you pass over a "crest" in the road that has a radius of 30 meters 30 meters a. How fast would you need to be traveling to experience apparent "weightlessness" while passing over the crest?
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