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Author Question: Consider a child who is swinging. As she reaches the lowest point in her swing: a. the tension in ... (Read 664 times)

lilldybug07

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on: Jul 28, 2018
Consider a child who is swinging. As she reaches the lowest point in her swing:
 a. the tension in the rope is equal to her weight.
  b. the tension in the rope is equal to her mass times her acceleration.
  c. her acceleration is downward at 9.8 m/s2.
  d. none of the above.

Question 2

A roller coaster, loaded with passengers, has a mass of 3000 kg; the radius of curvature of the track at the bottom point of the dip is 24 m. If the vehicle has a speed of 18 m/s at this point, what force is exerted on the vehicle by the track? (g = 9.8 m/s2)
 a. 2.3  104 N
  c. 7.0  104 N
  b. 4.7  104 N
  d. 1.0  104 N


bubulittle310@msn.cn

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


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lilldybug07

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Reply #2 on: Jul 28, 2018
Thank you!


bubulittle310@msn.cn

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Reply #3 on: Jul 28, 2018
Always glad to help...


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