Wednesday, March 28, 2007

HOW DOES A STYRO SAVE LIFE

After March is April, the month of summer. Some tourists visit Cebu to enjoy the heat of summer and our wonderful white sand beaches. How about me? Shall I also go to their place to enjoy summer? No, no, not at all.

April and May are the hottest months of the year here in the Philippines. It is the best time to go to beach and enjoy because this is the only time when we are free from school, terror teachers, deadlines, work and from pressure. The only pressure we feel perhaps is atmospheric pressure and if we are in the beach, we feel atmospheric pressure and liquid pressure. Physics! let us focus on the liquid pressure. Why do people enjoy the deep nlue water even if they don'tknow how to swim but for as long they have their styros and inflated rubber wheel with them? How do this styro and inflated rubber wheel works? How do these help? I can explain.

Density is equal to mass over volume. The greater the mass, the lesser the volume, the greater density. The lesser the mass, the greater the volume, the least density. Now, the least density you have, the greater possibility for you to float. Take note, possibility only. for example, a needle sinks but a boat floats. Bothare made up of the same material, butwhy does the other one sink andthe other one floats? Everything that is immersed or submerged in water is buoyed up by an upward force. This upward force is called the buoyant force. if this is so, why do other people still drown? It is because buoyant force is equal to the weight of water displaced by the immersed or submerged object. for example, a ton of steel must displaced a ton of water so that it will float. But if the weight of water displaced by the object is less than its weight ,then itwill sink. If an object sinks, it doesn't mean that buoyant force is not acting on the object.

Tips for you to enjoy your summer. To be able to float, make sure you displace water which is equal to your weight, if not greater than your weight. How can this be possible? Styros and inflated rubber wheels arethe answers. Styros and rubber wheels adds a great amount on your volume whichresults to a greater amount of water you can displace which results to floating. By using styros and inflated rubber wheels, you are increasing your volume but notmuch on your mass awhich results to a lesser density. Greater volume, greater water displaced, greater buoyant force, less increase in mass, less density. Enjoy your summer!!!

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