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A person who normally weighs 700 N is riding in an elevator that is moving upward but slowing down at a steady rate.
If this person is standing on a bathroom scale inside the elevator, what would the scale read?

A) 700 N
B) less than 700 N
C) more than 700 N
D) It could be more or less than 700 N, depending on whether the magnitude of the acceleration is greater than or less than 9.8 m/s^2.

Respuesta :

Answer:

option (B)

Explanation:

weight, mg = 700 N

it is moving with an negative acceleration upward.

Let the upward acceleration is - a.

According to Newton's second law

R - mg = ma

where R is the reading of scale

So, R - mg = - ma

R = mg - ma

Thus, the reading of scale is less than 700 N.

Answer: Less than 700 N

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