posted by Physics .
The cable supporting a 2100kg elevator has a maximum strength of 2.19×10^4 N.
What maximum upward acceleration can it give the elevator without breaking?
mass = 2100 kg
= 2100 kg *9.8 m/s/s
Reserve capacity for upwards acceleration, F
Use F=ma to find a. It will be less than 1 m/s/s.
I just hope this is not a real life problem.