Description
A 105 kg person stands on a scale in an elevator. The scale reads 1500 N.
Is the elevator at rest, moving up or down at a constant velocity, accelerating upward or accelerating downward?
What is the magnitude of the elevators acceleration?
Explanation & Answer
hello
force=mass*acceleration
= 105*9.8
=1029 N
1029 N< 1500 N,so the elevator is accelerating upward
When the elevator was at rest your weight was 1029 N
let the upward acceleration be x
Now your weight is 105*(9.8 +x) = 1500
(9.8 +x) =1500/105
x = 14.28 - 9.8
x = 4.49 m/s^2
magnitude of the elevators acceleration = 4.49 m/s^2 upward