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Homework Statement
A 545N physics student stands on a bathroom scale in an 847kg (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 427N.
Find the magnitude of the acceleration of the elevator.
Find the direction of the acceleration of the elevator.
What is the acceleration if the scale reads 635N?
If the scale reads zero, should the student worry? Explain.
What is the tension in the cable in part A?
What is the tension in the cable in part D?
Homework Equations
F=ma
w=mg
The Attempt at a Solution
I first find the mass of the student which is 55.61 kg.
Ok from the problem, we know that the elevator is 847kg including the mass of the student, thus one can conclude that the elevator has a mass of 791.39kg.
Anyways,
As the elevator moves, the scale reads 427N.
so it would be 427N = 847 (a) = .50m/s^2?
Correct thus far, or where did I go on the wrong track.