Question

HOW MUCH DO YOU WEIGH ON AN ELEVATOR?

Imagine you are riding on an elevator. Draw the following free body diagrams (the only forces you should include are F N and F w. Be sure to include all forces and an acceleration vector (if acceleration is zero you can write a=0).

1. an elevator speeding up and moving upward

2. an elevator slowing down and moving upward

3. an elevator speeding up and moving downward

4. an elevator slowing down and moving downward

5. an elevator moving upward at a constant speed

6. an elevator at rest

Answer #1

Description:
A single mass m1 = 3.9 kg hangs from a spring in a
motionless elevator. The spring is extended x = 11 cm from its
unstretched length.
the spring constant of the spring is 347.45 N/m
Now, three masses m1 = 3.9 kg, m2 = 11.7
kg and m3 = 7.8 kg hang from three identical springs in
a motionless elevator. The springs all have the same spring
constant that you just calculated above.
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