Three masses m1 = 3.2 kg, m2 = 9.6 kg and m3 = 6.4 kg hang from three identical

Question

Three masses m1 = 3.2 kg, m2 = 9.6 kg and m3 = 6.4 kg hang from three identical springs in a motionless elevator. The springs all have the same spring constant of 241.23.
1) The elevator is moving downward with a velocity of v = -3.5 m/s and also accelerating downward at an acceleration of a = -1.8 m/s2. The elevator is:
i)speeding up
ii) slowing down
iii) moving at a constant speed
2. Rank the distances the springs are extended from their unstretched lengths:
x1 = x2 = x3
x1 > x2 > x3
x1 < x2 < x3
3. What is the distance the MIDDLE spring is extended from its unstretched length?

Explanation / Answer

1) i)speeding up because the elevator is having speed 3.5 m/s and acceleratin with 1.8 m/s^2 the negative sign was just due to the directions of the acceleration not deceleraton 2) x1

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