Chemistry
Chemistry, 23.06.2021 18:40, alexishenning

. A 750 kg boulder is raised from a quarry 125 m deep by a long, uniform chain having a mass of 575 kg. The chain can support a maximum tension no greater than 2.5 times its weight without breaking. How long does it take for the boulder to be lifted out at maximum acceleration if it started from rest?

15.8 s

17.3 s

10.0 s

20.0 s

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Answers: 2
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