How long does it take for package a to reach the bottom

Reference no: EM13654570

two packages at ups start sliding down the 20degree ramp. package a has a mass of 5 kg and 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 for package a to reach the bottom?

Reference no: EM13654570

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