Since the change in kinetic energy is still zero, this means that the positive change in the capacity of inherent gravity is equal to the negative change in the internal energy. Let’s say that you have a mass of 75 kg (165 pounds). This means that raising the level of 1 meter would reduce your internal energy by 735 joules. This is called work.
Climbing stairs against the stairs of the stairs
Now we can return to the original question: What does the energy principle say in working for stairs against the stairs climbing machine? Well, we have already done stairs climbing physics. It is the same account if you get a 1 -meter table or climb 100 stories – it is just a different value of height. But suppose you stay in the same place while the stairs move under you. If someone measures your front movement, they will say that your speed is zero. Your height does not change either, so the work energy equation looks like this:
This says that the change in internal energy is also zero, which means that you are not burning any Thermal calories. I mean, this cannot be true … right? Then how do we fix this? I will use a great example based on This video is from Steve template. It goes without this: Imagine that you are climbing Salem moving below. Again, an observer on the ground sees you constant. However, we can also measure your speed from the reference frame of the moving stairs, and it will move up.
In fact, if the elevator has the walls and ceiling, you will not be able to tell you that you are in place. You will not even know that the stairs are moving. Since the stairs are moving at a constant speed (zero acceleration), this will be a reference frame with self -deficiency. In physics, any self -deficiency reference frame is valid like any other reference frame – the basic laws of physics remain the same. Therefore, from the perspective of the elevator framework We are Move and do work. It is the same as if you were walking in a fixed frame.
But in reality, the stairs are more difficult
I said that the climbing stairs and climbing stairs were the same – but they were not. In fact, climbing 100 stories is easier than the equivalent distance on the stairs. Does this seem crazy? He is a little crazy. The reason for their difference is that the field of gravity (ZIt is not really fixed.
Remember, we have identified potential gravity energy U = mxgxy? This is not really a mistake, but it is a little misleading. In fact, the potential gravity energy of the Earth’s system will be defined as follows:
