Simple machines have great importance in world like the bungee cord .Due to its elasticity can be used for different purposes. Bungee cord has wide use in making parachute strings, carriers and to tie bags. If we consider its composition, it has nylon in it with the rubber due to which it can absorb the jerk of weight when we are carrying something.

Image via Wikipedia

It can be bought using PayPal on many websites like amazon.com. Bungee cord is used in bikes, cars .Handles contain Bungee cord in them. Weight to tension ratio determines the quantity of weight which can be carried. Normally bungee cord is available in 3 sizes i-e 8 mm, 10 mm, 12 mm and the weight capacities are 48, 76 and 96 kg’s respectively. Highly stretchable bungee cords enable more weight to be carried. In parachute no string else than bungee cord can absorb the instantaneous shock produced by the weight of sky troopers. Students use cord to tie their bags on cycles, while also used to tie luggage. It is low cost and reliable. Skipping string is also made up of cord. Bungee jumping is popular among people, a bungee cord is attached to a post high from ground and person jumps from it. Due to elasticity, person can’t feel shock at the end of bungee cord. Mountains, valleys are suitable for this game but this involves the life danger. Many people are injured and wounded during this game. Bungee cord has best quality of rubber which is called synthetic rubber. In securing devices bungee cord has disadvantages as well, according to modern research of Ohio State University, the bungee cords can damage eyes and many patients have been reported having this problem. Elastic limit is present and if tension exceeds limit the bungee cord will break up, cord tied with hooks should be used with cared as injury may happen only because of some carelessness, for this weight limit should be followed to ensure the safety of bungee cord. It is available in different colors and sizes and lengths. Plastic coating on the cord increases the strength and reliability of inner synthetic rubber. NASA has decided to use it in space due to zero gravity. Astronauts can walk or jump; for this bungee cord is tied to their body .It is also called as shock cord or elastic cord due to its properties. Bungee cord’s quality is tested through visual examination, by marking the cord .Many companies are manufacturing cord’s using different methods and they are kept confidential. Mostly by using a rubber called latex rubber which is composed up of organic substance propylene… Under high pressure bungee cords are very dangerous, their recoil can damage vision, or any injury can occur due to slight carelessness .It is due to the fact that it stores very high potential energy and its reaction against tension can hit any place.  Quality bungee cords are exported through out the world, mainly it was made for parachute but now military is keen to use it for different other application which will be the future of cord.