Imagine you are riding an elevator down from the 5th floor to the 1st floor. Jus

Question

Imagine you are riding an elevator down from the 5th floor to the 1st floor. Just before coming to rest, what can you say about the magnitudes of the tension (T) and weight (w) forces?

A. T=W, B. T<W, C. T>W, D. Need more information.

Imagine you are riding an elevator down from the 5th floor to the 1st floor. Near the 3rd floor you are traveling with constant velocity. At this time, what can you say about your apparent weight vs weight?

A. apparent weight < weight.B. apparent weight = weight. C. apparent weight > weight. D. Not enough information.

Explanation / Answer

1) while de -accelarating downwards ,theres a pseudo force acting upwards , weight forces act downwards

so,

T+ ma = mg

so, from the equation we can see that , T< W

while travelling at constant velocity ,

there is no , pseudo force acing ,

so, T =mg

=> T = W    ( B , aparrent weight = weight )

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