Circular Motion Problems

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Uploaded by on Sep 13, 2009

Illustrates how to use Newton's second law to solve circular motion problems. For a complete index of these videos visit http://www.apphysicslectures.com

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Science & Technology

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  • For the satellite problem, why do you square the term (2Re)?

  • i just wasted 9:23 mins of my life

  • @KKEEAANNUU1994 The acceleration due to gravity decreases the further you are from Earth. g=9.81 only applies if you are close to the surface of the Earth.

  • Cant you just use, acceleration (g=9.81) =V^2/r to make the last question much simpler? or is that essentially what you did?

  • I was just writing down that formula for speed then u said it changes .....

  • thankyou so much for this video

  • @angelsassin G = 9.8

  • You can substitute g=G(M_E/R_E^2) into the result to clean it up a bit

  • Thanks! This really helped me with my homework this morning. You're much better than my physics teacher, I'm a Senior in HS.

  • @ACslater11 He's using the formula for the gravitational force between two masses. G is the gravitational constant, which I don't remember from off the top of my head. As the satellite revolves around the earth, it is the gravitational force between the satellite and the earth that keeps the satellite in orbit.

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