Is there any possibility of a conflict between the conservation of momentum and the conservation of energy?

Posted February 7th, 2008

David S asked: Suppose that N sticky balls having masses m1, m2, m3, … , mN are arranged about a point in space with various distances and in various directions. The balls are all moving toward the point such that they will all arrive at the same moment. Since they are sticky balls, they [...]

For energy conservation, what are the best ways to cut ones heating bill?

Posted February 7th, 2008

Chi Guy asked: I live in a 1 story new build with double pane windows and great insulation. Any suggestions?Powered by Yahoo Answers

Using conservation of energy determine the speed of the 3kg mass as the 5kg mass hits the ground?

Posted February 2nd, 2008

rachhar123 asked: Two masses (5kg, 3kg) on Atwood’s Machine.Vo=0.
At t=0, 5kg is 4m above ground, 3kg is on ground. What is final speed of the 3kg mass as the 5kg mass hits the ground? Use conservation fo energy to determine.Powered by Yahoo Answers