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Published: April 26th 2017
When you talk about the science behind the bungee jumps, the first question come in the mind “What are the relation between force, work, and energy feel by bungee jumpers?” I think it is very genuine questions about bungee jumps! Let’s see the first part of at a time that is Force on a Bungee jumper. The gravitational force initially experience by the Bungee Jumpers, which pull down on everything and jumper goes toward the ground surface. The gravitational force is steady throughout the jump.
Air Resistance Force
While the bungee jumps, the jumpers also experienced a force due to air resistance. As faster the jumpers falling, the more air resistance force pushes opposite to the directions of falling through the air.
Another force work during bungee jump is a spring force due to the bungee cord. The volume of spring force that the bungee cord pulls back on the jumpers it depends on how far the cord has been stretched. As further jumper has fallen, more spring force will work and cord pull back on the jumper.
Now let’s look at the work that is done on Jumper. Every single work done on jumpers changes their kinetic energy, mv2
/2, where “m” is their mass and “v” is their velocity. You can find out that work by multiplying total distance travel times that component of force in that direction. There is also negative force if the force and direction of motion will act in opposite direction to each other.
For example, the jumpers’ jumps off and start falling down, that condition the gravity does the positive work due to the force of gravity in the same direction that the jumper falls in. the spring force of jumping cord does the negative work on jumper due to the jumper is falling down while the elastic cord pulling up.
Now last part of question “How does energy work in this situation?”. During the bungee jumps there is three type of energy work: potential energy of gravity, the kinetic energy of jumper and thermal energy air. Potential energy depends on how high of the ground you are, for example, you keep a book above your head, that book is more potential energy than a book kept on the ground. Kinetic energy depends on how fast you are moving.
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