Question

Are the forces that act on a object equal and opposite? Are they Newton’s third law force pair? Explain. hello this question refers to this picture that I sent. (It’s a spring that you can attach weights to)

Answer 1

`\text{ }\Rightarrow\text{Yes}`

Step-by-step explanation: The spring-mass system has a relation that gives the force as a function of the stretch as follows:

`F=-k\Delta x`

If we attach a few weights to the spring and let them hang, they will stretch the spring for some length, and remain stationary. at this point, the forces will balance, (The gravity and the spring):

`F_s=F_g\Rightarrow|k\Delta x|=|mg|`

Direction wise this Implies the following:

`F_s=(-F_g)`

This is basically Newton's third law, which states that any pull on the object has an equally opposite pull on it.