A 50-kg student gets in a 1000-kg elevator at rest. As the elevator begins to move, she has an apparent weight of 600 N for the first 3 s. How far has the elevator moved, and in which direction, at the end of 3 s?

Question

Physics

Alejandro Ellis

30 May, 04:50

A 50-kg student gets in a 1000-kg elevator at rest. As the elevator begins to move, she has an apparent weight of 600 N for the first 3 s. How far has the elevator moved, and in which direction, at the end of 3 s?

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Answers (1)

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Kareem Holt · Answer 1

The elevator has moved 54 meters upwards.

Explanation:

m = 50kg

F = 600 N

t = 3 sec

a = [F - (m*g) ]/m

a = (600N-490N) / 50kg

a = 2.2 m/s²

h = (a*t²) / 2

h = (2.2m/s² * (3 sec) ²) / 2

h = 9.9 m