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OpenStudy (anonymous):
four block of masses 40kg, 50kg, 60kg and 70kg are all stacked on top of each other in an elevator in order of decreasing mass, with the lightest mass on top. The elevetor moves down with an acceleration of 1.6m/s^2. Find the magnitude of the contact force between the 50kg and the 60kg blocks?
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OpenStudy (anonymous):
what are the values of N1 and N2?
OpenStudy (anonymous):
what?
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