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An elevator is pulled vertically upwards by a cable. The velocity-time graph for the motion is shown above. Find
- the distance travelled by the elevator,
- the acceleration during the first stage and the deceleration during the third stage.
The mass of the elevator is 800 kg and there is a box of mass 100 kg on the floor of the elevator.
- Find the tension in the cable in each of the three stages of the motion.
- Find the greatest and least values of the magnitude of the force exerted on the box by the floor of the elevator.