Question

3. On a trip to Kuala Lumpur, Malaysia, you visit the Petronas Twin Towers (the world’s tallest buildings from 1998 to 2004). In an elevator on the way to the top, you wonder what the maximum acceleration of the elevator is during normal operation. However, when you ask what it is at the building’s information desk, the people there don’t seem to understand what you’re asking. As a physics student, you realize that you can find out for yourself. You rush back to your hotel, borrow the bathroom scale in your room, and return to the elevators in the Petronas Towers. While standing on the scale inside the elevator when it isn’t moving, you see that the scale shows a steady reading of 68 kg. You keep standing on the scale as the elevator ascends to the top of the building and note that the highest value the scale reads is 91 kg.

Answer 1

Given that when the elevator is not moving the scale shows a reading of 68kg

So the mass of the person,

And when the elevator is accelerating, the scale reads a maximum value of 91kg

So maximum apparent mass,

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The scale shows a higher value because when the elevator is moving up and accelerating, the support force increases.

Use formula

ANSWER:

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