Question

You are conducting an experiment inside an elevator that can move in a vertical shaft. A load is hung vertically from the ceiling on a string, and is stationary with respect to you. The tension in the string is measured to be 10% less than the force due to gravity on the load. No other forces are acting on the load. Which of the following statements about the elevator are correct?

Answer 1

The elevator is not a inertial frame of reference.

Step-by-step explanation:

Lets take load = W

The tension in the string =T

T= (1-0.1 )W

T=0.9 W

From Newtons second law

If elevator move up :

T- W = ma

T= W+ ma

It means that Tension is more than the W .But given that tension is 10% less than W.

If elevator move down:

W- T = m a

T= W - m a

Yes it is true.It means that elevator is moving downward.

So we can say that the elevator is not a inertial frame of reference.