Question: Two packages at UPS start sliding down the 20° ramp shown in FIGURE P7.33. Package A has a mass of 5.0 kg and a coefficient

Two packages at UPS start sliding down the 20° ramp shown in FIGURE P7.33. Package A has a mass of 5.0 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?

2.0 m 200 FIGURE P7.33

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