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Author Question: Two blocks with mass m2 > m1 are pulled as shown along rough horizontal surfaces with the same ... (Read 385 times)

kwoodring

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on: Jul 28, 2018
Two blocks with mass m2 > m1 are pulled as shown along rough horizontal surfaces with the same coefficient of friction. Both are pulled at constant speed, but v2 < v1. Which tension force does more work moving the block a distance D along the surface?
 
  1.T1
  2.T2
  3.Neither; both do zero work
  4.Neither; both do the same amount of negative work
  5.Neither; both do the same amount of positive work
  6.Impossible to determine without knowing the masses
  7.Impossible to determine without knowing the speeds
  8.Impossible to determine for some other reason

Question 2

Two blocks with mass m2 > m1 are pulled as shown along horizontal surfaces, each at a constant speed v. Which tension force does more work moving the block a distance D along the surface?
 
  1.T1
  2.T2
  3.Neither; both do zero work
  4.Neither; both do the same amount of negative work
  5.Neither; both do the same amount of positive work
  6.Impossible to determine without knowing the masses
  7.Impossible to determine without knowing the coefficients of friction
  8.Impossible to determine without knowing the speed v
  9.Impossible to determine for some other reason


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kswal303

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

2

Answer to Question 2

2,7


kwoodring

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


kswal303

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


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