Two boxes of mass mA and mB sit in an elevator as shown in the figure. A rope is

Question

Two boxes of mass mA and mB sit in an elevator as shown in the figure. A rope is attached to the top of the elevator to move the elevator up and down in the building. Initially the elevator is stationary.

Circle the correct answers that tell the relative sizes of the forces between the boxes and the elevator, or tell if none of the answers are correct.

1. FA on B < = > FB on Elevator 2. FA on B < = > FB on A 3. FB on Elevator < = > FElevator on B

Now the elevator accelerates upward at an acceleration of 5 m/s2. Again, circle the correct answers, or tell if none of the answers are correct.

4. FA on B < = > FB on Elevator 5. FA on B < = > FB on A Finally, the rope is cut.

Again, circle the correct answer, or tell if none of the answers is correct.

6. FA on B < = > FB on Elevator

Explanation / Answer

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