acceleration in an elevator- physics

Physics
Tutor: None Selected Time limit: 1 Day

A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.80 of the person's regular weight. Calculate the acceleration of the elevator, and find the direction of acceleration.

Sep 23rd, 2015

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SOLUTION:

Since we have:

gravity x 0.80 + acceleration of elevator = gravity

Hence, the acceleration of the elevator can be calculated by:

9.8 x (1 - 0.80) = 9.8 x 0.20 = 1.96 m/sec^2

** P/S: Please remember to give me a review later on once the answer is correct. I would be highly appreciate it. Thank you. **
Sep 23rd, 2015

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