- #1
Thom_Silva
- 47
- 1
Hi,
Imagine this situation:
I'm pushing against a wall, and i obviously making a force. The wall doesn't move, so no work is being done, nevertheless i wasted energy. Is there way to calculate how much energy was spent assuming that we know the force being applied to the wall.
Another problem related to this:
I'm building a small plane that has to lift a certain weight and stay hovering in the same place. I have to choose an engine to do so, and all i have are the power outputs of each engine. When the plane is hovering is there any work being done ? The engine will clearly be using energy, but apparently no work is being done, because the plane stays in the same place. How am i supposed to choose an engine that could do that activity?
Thank you very much, and sorry for the stupid question xD
Imagine this situation:
I'm pushing against a wall, and i obviously making a force. The wall doesn't move, so no work is being done, nevertheless i wasted energy. Is there way to calculate how much energy was spent assuming that we know the force being applied to the wall.
Another problem related to this:
I'm building a small plane that has to lift a certain weight and stay hovering in the same place. I have to choose an engine to do so, and all i have are the power outputs of each engine. When the plane is hovering is there any work being done ? The engine will clearly be using energy, but apparently no work is being done, because the plane stays in the same place. How am i supposed to choose an engine that could do that activity?
Thank you very much, and sorry for the stupid question xD