Homework Help: Physics

Posted by liz on Thursday, September 27, 2012 at 12:32pm.

Luke stands on a scale in an elevator which has a constant acceleration upward. The scale reads 0.964 kN. When Luke picks up a box of mass 18.2 kg, the scale reads 1.202 kN. (The acceleration remains the same.) Calculate the acceleration of the elevator (enter first). Is it up or down?
Calculate Luke's weight.

Physics - bobpursley, Thursday, September 27, 2012 at 12:34pm
forcechange=changemass*(g+a)
1.202-.964=18.2(9.8+a) solve for a

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