The board stores energy as the diver jumps onto it, then returns the energy, which the diver may then use in addition to what he adds with his next jump. This will continue until he jumps away from the board, or until it breaks from attempting to store too much energy.
potential energy
I have never had a skateboard with springs. The part you are probably talking about are the trucks, the metal piece under the board that the wheels and berings are attached to. If you were wondering if all trucks have springs i have never had trucks with springs either. Or any thing on a skateboard with springs and i have had lots of boards.
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Assuming that the two are the same man ... the man diving from a 10 meter board would have five times the potential energy as the man on the 2 meter board. The energy is directly proportional to the height.
It's just a piece of particle board with a sticker on it, there's no "soul" or "energy" in the board.
i think by friction
The diver at the top of a diving board has potential energy
Sanding a board involves converting mechanical energy (from the movement of sandpaper) into thermal energy (from friction) and some small amount of sound energy. It does not involve a direct conversion to either electrical or chemical energy.
No, a swimmer standing on a diving board is an example of potential energy, as the swimmer has the potential to move and convert that stored energy into kinetic energy once they dive into the water.
Kinetic energy, and gravitational potential energy.
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