Posted by Kristen on Monday, October 15, 2007 at 11:57pm.
An elevator and its load have a combined mass of 1550 kg. Find the tension in the supporting cable in Newtons when the elevator , originally moving downward at 11 m/s, is brought to rest with constant acceleration in a distance of 43 m.

AP PHYSICS..so lost  bobpursley, Tuesday, October 16, 2007 at 8:14am
Tension= mg + ma where a is the acceleration. + when the elevator is going up (it adds to tension), and  going down, it reduces tension when falling.
a= change velocity/time (rest means zero velocity)
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