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**Can you check if my answers are correct?**

Suppose that the mass of the elevator and passengers were 1500 kg, and the frictional force (wheels on tracks) was 9000 N.

1. Draw a force diagram for the elevator.

Force of friction pointed up and force of gravity pointed down

2. Determine the acceleration of the elevator.

would it be -3.8 m/s^2 or 3.8 m/s^2?

3. Suppose that a 50.0 kg woman were standing on a bathroom scale in this elevator car. What would the scale read?

300 N

4. Determine how long it would take for the elevator car (starting from rest) to drop 30 floors (assume each floor is 3.0 m).

6.88 s

**thanks!**