Homework Help: Physics

Posted by Aalaa on Monday, October 8, 2012 at 5:08pm.

A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.9 m/s2.
a) If the tension in the cord is 94 N, what is the lamp's mass?
b)What is the cord's tension when the elevator ascends with an upward acceleration of 2.9 m/s2?

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