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.

Question

Physics

Obie

7 May, 09:11

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.

+4

Answers (1)

Know the Answer?

Jermaine Roach · Answer 1

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.