anonymous
  • anonymous
A 600-kg car is going over a curve with a radius of 120 meters that is banked at an angle of 25 degrees with a speed of 30 meters per second. The coefficient of static friction between the car and the road is 0.3. What is the normal force exerted by the road on the car? a) 7240 N b) 1590 N c) 5330 N d) 3430 N e) 3620 N Note: The speed is not Vmax (roughly 32 m/s). I've been working under the assumption that mgcos(theta) will be increased by the frictional component acting downward. I simply can't seem to get the solution.
MIT 8.01 Physics I Classical Mechanics, Fall 1999
schrodinger
  • schrodinger
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Vincent-Lyon.Fr
  • Vincent-Lyon.Fr
Draw a free body diagram of the situation.
anonymous
  • anonymous
Strange. I typed this question weeks ago. I easily identified it because of the "Note:"
anonymous
  • anonymous
What´s is the value for G force?

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anonymous
  • anonymous
Here is the answer.
Vincent-Lyon.Fr
  • Vincent-Lyon.Fr
You can always use g = 10 or g = 9.8 m/s² and see which value is nearest among the answers.
anonymous
  • anonymous
So, the answer is above. In this question you have to find out the correct value for G. If not you won´t have the right answer.

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