Question

an elevetor and its load have a total mass of 800kg.the elevetor is originally moving downwards at 10ms-1,it slows down to stop with cinstant acceleratiin in a distance of 25m.find the tension T in the supporting cable while the elevator is being brought to rest is​

Answer 1

Answer:

9600N

Explanation:

The very retardation on the system in breaking it's motion is 10²/(2×25)=2m/s². Taking g=10m/s², so net retardation is (2+10)m/s² =12m/s²,acting upwards.

Hence the retarding force as tension on elevator=800kg ×12m/s²=9600kg·m/s² or 9600N