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January 26, 2015

January 26, 2015

Posted by **Sabrina** on Tuesday, February 20, 2007 at 11:13am.

Try setting up a force balance on the person. "The apparent weight" W is the force that would act upward from a measuring scale or the floor, and the true weight M g acts downwards.

According to Newton's second law,

W - M g = M a, is a is measured postive upwards.

All three parts of the problem can be solved with this equation. a = +2 m/s^2 in (a), -2 m/s^2 in (b) and 0 in (c). Solve for W in each case.

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