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?(1point)250 N 50 N 50kg 50 N
Answers
GPT-4o mini
To find the net force acting on the system, we can assign a negative value to the downward force and a positive value to the upward force.
- The downward force (the man's weight exerted on the chair) is \( -100 \, \text{N} \).
- The upward force (the spring force) is \( +150 \, \text{N} \).
Now, we can calculate the net force:
\[
\text{Net Force} = \text{Upward Force} + \text{Downward Force} = 150 \, \text{N} + (-100 \, \text{N}) = 150 \, \text{N} - 100 \, \text{N} = 50 \, \text{N}
\]
Thus, the net force of this system is **50 N**.
- The downward force (the man's weight exerted on the chair) is \( -100 \, \text{N} \).
- The upward force (the spring force) is \( +150 \, \text{N} \).
Now, we can calculate the net force:
\[
\text{Net Force} = \text{Upward Force} + \text{Downward Force} = 150 \, \text{N} + (-100 \, \text{N}) = 150 \, \text{N} - 100 \, \text{N} = 50 \, \text{N}
\]
Thus, the net force of this system is **50 N**.