Question

Suppose a man is sitting on a chair and exerting 100 N of force downward, while a spring beneath the chair exerts 150 N of force upward. If you assign a negative value to the downward force, what is the net force of this system?(1 point)
Responses

50 N
50 N

250 N
250 N

50 kg
50 kg

-50 N

Answer 1

Net force = +150 N + (−100 N) = +50 N, i.e. 50 N upward. So the correct choice is 50 N.