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Since the change in the kinetic energy is always leru, that means positive change in the potential of gravial is equal to the internal energy change. We say you have a mass of 75 kilograms (165 pounds). That means moving 1 meter reduced your internal energy from 735 joule. That is called by working.
Climbing scale vs. a scale climber
Now can we turn to the original question: What did the start of work for neighboring scale toward a scaling machine of scale? Well, we already have stairs of climbing climb. It’s the same calculus if you put on top of 1 meter board or climb 100 stories – it’s just a different value for height. But I guess you are in the same place while the stairs move below you. If someone measuring your movement movement, they have to say your speed is zero. Your height doesn’t change even, so now the work equation of work seems to be this:
This says inward energy change is also zero, which means not to burn Whatever calories. I mean, what cannot be good … So how are we fix this? I’m going to use a beautiful example based on This video from Steve Mold. I am Okay so: imagine you have climbed in a moving moving escalator. Again, a observer in the Earth would see you as a stationary. However, we can measure your speed by the climbing reference frame, and you will be moving.
Indeed, if the escalator has walls and a roof, I couldn’t tell you that you are in place. You don’t even know the stairs. Since the stairs moves at a constant speed (zero acceleration), this would be a inertial reference frame. In physics, any inerial reference frame is valid as any other reference frame – the laws of the basis of physics of physics. Therefore, from the exchange perspective of the scal i am moving and doing the work. Is the same thing that walking in a stationary frame.
But actually, the scale climate is harder
I said the scale scale and climb the stairs were the same – but I am not. In fact, climbing 100 stories are easier than distance equivalent in a scale climb. Do you look crazy? It’s a little crazy. The reason that are different are because the gravitational field (g) is never really constant.
Reminder, we have defined gravitational potential energy as U = mxgxy? It’s not really wrong, but it’s a little wrong. Actually, the potential gravitational energy for the land system would be defined as follows:
