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Author Question: Three joggers are running along straight lines as follows: Jogger A, with a mass of 55.2 kg, is ... (Read 26 times)

Chloeellawright

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on: Jul 29, 2018
Three joggers are running along straight lines as follows: Jogger A, with a mass of 55.2 kg, is traveling along the line y = 6.00 m at 3.45 m/s in the positive x-direction.
 
  Jogger B, with a mass of 62.4 kg, is traveling at 4.23 m/s along the line x = 3.00 m in the positive y-direction. Jogger C, with a mass of 72.1 kg, is traveling at 4.75 m/s along the line x = -5.00 m in the negative y-direction. What is the total counterclockwise angular momentum of the three joggers about the origin?
  A) 680 kgm2/s
  B) 3650 kgm2/s
  C) 1340 kgm2/s
  D) 2060 kgm2/s
  E) 1930 kgm2/s

Question 2

You are driving your car and set your sunglasses on the dashboard. When you make a left turn, the sunglasses go sliding off to the right. Explain.
 
  What will be an ideal response?


triiciiaa

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

C

Answer to Question 2

If the glasses stay in place relative to the car, they are going around a curve and require a force perpendicular to the direction of motion to do this. If the frictional force is too small they do not follow the same path as the car but one that is less curved.


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Chloeellawright

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Reply #2 on: Jul 29, 2018
Thanks


triiciiaa

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Reply #3 on: Jul 29, 2018
Welcome :)


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