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Let m(1)=1kg, m(2)=2kg and m(3)=3kg in f...

Let `m_(1)`=1kg, `m_(2)`=2kg and `m_(3)`=3kg in figure (5-E12).Find the accelerations of `m_(1)`,`m_(2)` and `m_(3)` .The string from the upper pulley to `m_(1)` is 20cm when the system is released from rest.How long will it take before `m_(1)`strikes the pulley?

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