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a 520 N physics student stands on a bathroom scale in an 850 kg(including student) elevator that is supported by a cable. as the elevator starts moving, the scale reads 420 n
a. find the acclereration of the elevator (magnitude and direction -- take up to be the postive direction)
b. what is the accelertation if the scale reads 640n
c. if the scale reads zero, what is the acceleration of the elevator -9.81?
d. what is the tension in the cable in parts a and c.
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