The discussion centers on the concept of net force and acceleration in the context of a truck moving at constant velocity. It is established that when a truck moves with constant velocity, its acceleration is zero, resulting in a net force of zero. The forces acting on the truck, including gravitational force, normal force, and frictional forces, balance out, leading to this state. The applied force from the engine is countered by frictional forces, allowing the truck to maintain constant speed without acceleration.
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The sign of work doesn't just depend on the reference frame, but also on whether the value represents work done by A on B, or by B on A. These are two completely different issues, that can affect the sign of work.sophiecentaur said:It's the same with Work By and Work Done. It's just Work with a sign which depends on your measurement frame.
Maybe but they are both viewed in an intuitive way.A.T. said:These are two completely different issues
It's only by knowing the displacement and the force that you can decide what's on what. In a scenario of say two jet engines pushing against each other you can pass through the condition where the net FTD changes sign. Or are you saying that the frame of reference is involved? Perhaps if you made your statement in a different way, I'd understand what your are saying.A.T. said:but also on whether the value represents work done by A on B, or by B on A.
That is no reason to conflate them.sophiecentaur said:Maybe but they are both viewed in an intuitive way.
Yes, from these two you can compute work.sophiecentaur said:It's only by knowing the displacement and the force that you can decide what's on what.
This has been explained to you so many times in previous threads. Just reread them instead of hijacking another one.sophiecentaur said:Perhaps if you made your statement in a different way, I'd understand what your are saying.