anonymous
  • anonymous
A 30 kg block slides down a 20° ramp with an acceleration of 1.2 m/s2. What is the coefficient of kinetic friction between the block and the ramp?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@CShrix
rvc
  • rvc
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Michele_Laino
  • Michele_Laino
on the block are acting two forces, the friction force \(R\): \(R= \mu mg \cos 20\), where \(\mu\) is the kinetic friction coefficent, and the driving force \(F:\) \(F=mg \sin 20\), so we can write this equation: \[\Large ma = mg\sin 20 - \mu mg\cos 20\] where \(a=1.2\) please solve such equation for \(\mu\)

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