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Author Question: A 150-N crate is being pulled up a perfectly smooth ramp that slopes upward at 15 by a pull that is ... (Read 166 times)

charchew

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on: Jul 29, 2018
A 150-N crate is being pulled up a perfectly smooth ramp that slopes upward at 15 by a pull that is directed at 30 above the surface of the ramp.
 
  What is the magnitude of the pull required to make the crate move up the ramp at a constant velocity of 1.75 m/s?

Question 2

How fast (in terms of the speed of light) should a moving clock travel if it is to be observed by a stationary observer as running at one-half its normal rate?
 
  What will be an ideal response?


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flexer1n1

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

45 N

Answer to Question 2

0.866c


charchew

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Reply 2 on: Jul 29, 2018
Gracias!

momolu

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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