Doubt about Third Law of motion
hello
I have a discussion to make
we know total momentum of a single system in conserved
as in every reaction has an equal and opposite reaction
the thing why I dont understand is why does the doing work take energy
if force is gonna get transferred back to me anyways
15 Replies
@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Like I dont understand whats really stopping me from pushing a block with a billion joules of energy
Because the force gets applied on 2 different body
Basic definition of 3rd law
we good?
Not really
it's inertia?
You said the force is going to get transferred to you did u mean the energy?
energy is not gonna get back to us anws think of yourself pushing a block the energy is gonna dissipate either as friction or as heat
See the key thing to remember is that while momentum is conserved in a system, energy is a bit different. When you do work on something.. you’re transferring energy into it, and that energy isn’t necessarily just going to come back to you in the same form.
For example if you push a car, you’re transferring energy to it, which might be used to move the car or overcome friction. This process can involve converting energy into heat or sound( which aren’t easily reversible). The reaction force one feels is just a part of Newton’s third law—an equal and opposite force. But the energy you’ve put into the system doesn’t just get bounced back...it gets dispersed and used in various ways.
nice inputs!
shall we close this out? sorted?
Alr close it
You can mark it as solved by tying + solved and then @user who helped you
Check the pinned post in this #💭│doubts section!
+solved @itsav23
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