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Homework Statement
A 80.8 kg man inside a 40.0 kg dumb-waiter pulls down on the rope. At that moment the scale on which he is standing reads 200N. Determine the elevator's acceleration
(basically the man is inside the elevator pulling a rope that goes around the pulley, which makes the elevator move upward)
Homework Equations
Fnet=ma
The Attempt at a Solution
Man:
80a= -T-200+784
Elevator:
40a=T+592
I keep getting wrong answer. The answer key says 0.2 m/s^2 upward.
And I really don't know why the normal force of the man is supposed to be
the net force of the man.
Thank you in advance!