Now the elevator is moving downward with a velocity of v = -2.1 m/s but accelerating upward with an acceleration of a = 4.6 m/s2. (Note: an upward acceleration when the elevator is moving down means the elevator is slowing down.)
What is the force the bottom spring exerts on the bottom mass?

m1 = 3.3 kg
m2 = 6.6 kg
m3 = 9.9 kg

Question

Now the elevator is moving downward with a velocity of v = -2.1 m/s but accelerating upward with an acceleration of a = 4.6 m/s2. (Note: an upward acceleration when the elevator is moving down means the elevator is slowing down.)
What is the force the bottom spring exerts on the bottom mass?

m1 = 3.3 kg
m2 = 6.6 kg
m3 = 9.9 kg

anonymous · Answer

Here's a picture to see what's going on: