To find the net force in this system, you can add the forces together, taking into account the assigned signs.
- The downward force exerted by the man is -100 N (negative because it is downward).
- The upward force exerted by the spring is +150 N.
Now, calculate the net force:
Net Force = Upward Force + Downward Force Net Force = 150 N + (-100 N) Net Force = 150 N - 100 N Net Force = 50 N
So, the net force of this system is 50 N.