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September 1, 2015

Homework Help: physics

Posted by Ben on Wednesday, June 16, 2010 at 3:55pm.

Two packages at UPS start sliding down the 20° ramp shown in Figure P8.25. Package A has a mass of 3.5 kg and a ­coefficient of friction of 0.20. Package B has a mass of 10 kg and a coefficient of friction of 0.15. How long does it take package A to reach the bottom?

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