Because the change in kinetic energy is still zero, it means that a positive change in potential gravitational energy is equal to a negative change in internal energy. Let’s say you have a mass of 75 kilograms (165 pounds). This means that an augment of 1 meter would reduce your internal energy by 735 juli. It’s called.
Climbing the stairs vs. stairs climbing
Now we can go back to the original question: what does the principle of work energy about stairs say compared to the staircase machine? Well, we have already done staircase physics. This is the same calculations if you get to a 1-meter table or climb 100 floors-it’s just a different value for height. But let’s assume that you remain in the same place while the stairs move under you. If someone measures your movement, say that your speed is zero. Your height does not change either, the uniformity of work does not change, as: ::
This says that the change in internal energy is also zero, which means you don’t burn everyone calories. I mean it’s not the right one – right? How will we fix it? I intend to operate a nice example based on this movie from Steve Mold. It looks like: imagine you climbing the escalator. Again, the observer on Earth considers you stationary. However, we could measure your speed from the reference frame of the escalator and move up.
In fact, if the moving stairs had walls and ceiling, you would not be able to say that you are left in place. You wouldn’t even know that the stairs are moving. Because the stairs move at a constant speed (zero acceleration), it would be a limp reference frame. In physics, every inert reference frame is just as vital as any other reference frame – the basic laws of physics remain the same. From the point of view of the frame frame of the Echodni framework If Introducing and performing work. It’s the same as if you were walking a stationary frame.
But in fact the stairs climbing is more hard
I said that the stairs and climbing stairs were the same – but they are not. In fact, climbing into 100 stories is easier than an equivalent distance on the stairs. Does it seem crazy? It’s a bit crazy. The reason for which they are different is that the gravitational field (gravitational fields (G) It is never really eternal.
Remember, we have defined gravitational potential energy as U = mxgxy? It’s not really bad, but it’s a bit misleading. In fact, gravitational potential energy for a system with earth would be defined as the following: