Final answer:
The question pertains to calculating the tension in an elevator's cable during acceleration, constant velocity, and deceleration phases, in addition to its net displacement and final velocity. These calculations apply physics formulas involving mass, gravity, and acceleration.
Step-by-step explanation:
The student's question involves calculating various forces and movements related to an elevator in a physics context. Specifically, the problem set includes finding the tension in the elevator cable as it accelerates, moves at a constant velocity, decelerates, and determining the elevator's net displacement and final velocity.
For example, to calculate the tension in the cable while the elevator with a mass of 1700 kg accelerates upward at 1.20 m/s², we use the formula: Tension (T) = mass (m) × (acceleration due to gravity (g) + acceleration of the elevator (a)). In this case, the calculation would be T = 1700 kg × (9.8 m/s² + 1.20 m/s²), resulting in the tension during acceleration.
When the elevator travels at a constant speed, the tension in the cable is equal to the weight of the elevator, which is the mass multiplied by the acceleration due to gravity. During deceleration, the tension is calculated similarly to acceleration but with the deceleration rate subtracted from the acceleration due to gravity.