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Questions tagged [free-body-diagram]

A pictorial device which analyzes forces present on any body with the use of vectors. Allows easier grasping of problems involving either objects at equilibrium or in motion. Can be used to predict presence of forces.

0 votes
3 answers
134 views

Is there any phenomenon where opposite reaction (Newton's 3rd Law) is not fulfilled?

I'm wondering if there is any case in nature/physics where it has been observed "where there is an action, there is not necessarily an exact equal and opposite reaction". Or is there some ...
Gabe's user avatar
  • 183
0 votes
1 answer
55 views

Why does the counterweight actually go up?

So, let's consider a simple ideal pulley system where there's a weight to be pulled, and a counterweight on the other side According to my understanding (feel free to nitpick), there's a restoring ...
damacc's user avatar
  • 9
-3 votes
0 answers
26 views

How to calculate the tension in the threads? [closed]

In situation like the one demonstrated in this simple question, how is the Tension’s magnitude quantified when two threads with angle theta (or cables in border situations) are used to hang a specific ...
Mohammad Osama's user avatar