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Author Question: Two blocks of masses 20 kg and 9.0 kg are connected together by a light string and rest on a ... (Read 45 times)

jCorn1234

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on: Jul 28, 2018
Two blocks of masses 20 kg and 9.0 kg are connected together by a light string and rest on a frictionless level surface. Attached to the 9.0-kg mass is another light string, which a person uses to pull both blocks horizontally. If the two-block system accelerates at 0.80 m/s2, what is the tension in the second string attached to the 9.0-kg mass?
 a. 23 N
  b. 14 N
  c. 16 N
  d. 7.2 N
  e. 25 N

Question 2

Two blocks of masses 30.0 kg and 8.0 kg are connected together by a light string and rest on a frictionless level surface. Attached to the 8.0-kg mass is another light string, which a person uses to pull both blocks horizontally. If the two-block system accelerates at 0.60 m/s2 what is the tension in the connecting string between the blocks?
 a. 23 N
  b. 37 N
  c. 18 N
  d. 4.8 N
  e. 50 N


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Li Jun

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

a

Answer to Question 2

c


jCorn1234

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Li Jun

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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