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Homework Help: Physics

Posted by Steeve on Wednesday, October 24, 2012 at 9:01pm.

The coefficient of kinetic friction for a 34.3 kg bobsleigh on a track is 0.150. What external force is required to push it down a 5.60° incline and achieve a speed of 60.12 km/h at the end of 75.2m ?

• Physics - Elena, Thursday, October 25, 2012 at 12:13pm

  PE=KE + W(fr)
  mgh =mv²/2 + F(fr)•s
  m•g•s•sinα =mv²/2 +μ•m•g•cosα•s
  Solve for μ
  

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