Answer:
<h3>They have the same tensile strain</h3>
Explanation:
Strain of a material is the ratio of its extension to its original length.
strain = e/lo
e is the extension
lo is the original length
For a copper rod;
e = 2.00 * 10^-2mm
lo = 1.00m
convert 1.00m to mm
1.00m = 1*10^-3mm
get the strain
Strain = 2.00 * 10^-2mm/1*10^-3mm
Strain = 2 * 10^{-2+3}
Strain = 2*10^1 = 20
For the steel
e = 2.00 * 10^-3mm
lo = 0.100m
convert 0.100m to mm
0.1m = 0.1*10^-3mm
0.1m = 10^-4mm
get the strain
Strain = 2.00 * 10^-3mm/10^-4mm
Strain = 2 * 10^{-3+4}
Strain = 2*10^1 = 20
Since the value of their strain are the same, this means that they a re under the SAME tensile strain. No one is greater that the other.
As per given conditions there are two directions along which forces are acting
1. Net force along left direction is given as
![F_{left} = 352N + 176 N = 528 N](https://tex.z-dn.net/?f=F_%7Bleft%7D%20%3D%20352N%20%2B%20176%20N%20%3D%20528%20N)
2. Net force towards right direction is given as
![F_{right} = 528N + 440 N = 968 N](https://tex.z-dn.net/?f=F_%7Bright%7D%20%3D%20528N%20%2B%20440%20N%20%3D%20968%20N)
now since the two forces here in opposite direction so here we will have net force given as
![F_{net} = F_{right} - F_{left}](https://tex.z-dn.net/?f=F_%7Bnet%7D%20%3D%20F_%7Bright%7D%20-%20F_%7Bleft%7D)
![F_{net} = 968 - 528](https://tex.z-dn.net/?f=F_%7Bnet%7D%20%3D%20968%20-%20528)
![F_{net} = 440 N](https://tex.z-dn.net/?f=F_%7Bnet%7D%20%3D%20440%20N)
so here net forces must be 440 N towards right
Answer: e
Explanation:
Argument against the person, circumstantial.
Answer: The net force is negative, The net force is positive, There is change in motion.
When an balanced force acts, there is change in motion. In case of balanced forces, the object does not change its motion. The unbalanced force causes change in the momentum of the object. There would be some net force. It would not be zero. The net force is zero when the acting forces are balanced. The net force in case of unbalanced forces have certain magnitude and are positive or negative depending on the direction. The positive and negative sign denotes direction of the net force.