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Saturday, May 30, 2009
Do U Get Wetter Running In The Rain?
During one of those wondering moments, my mind wandered off in inquiry. Whenever it rains, some people run towards the nearest shelter and there are many others who would continue walking towards their destination. It is one of those moments that got me thinking if running or walking in the rain would actually make a difference to the amount of wetness (mass of water on an object).
Like in any other experiment, one makes a hypothesis, sets the constants and determines the variable. Wetness refers to the mass of rain on an object. In this case the constants should be the surface area of the object (your body), the amount of rainfall (assuming the the mass of rain falling per area is the same), time spent in the rain (distance traveled by a body/speed of body), relative rain velocity (velocity of the rain - velocity of the body), angle at which the rain hits the object, density of rain. The variable would be the speed of the object.
Well we have to bear in mind that alot of assumptions are made in this case (surface are of body cant be constant throughout and the speed of the various body parts differ as well).
So the verdict then? I would think it is more as when you run, assuming that the rain is from the back, your back happens to slouch and there is more surface area that captures the rain for the same amount of time as when a person is walking, bcos we have kept time as a constant factor in this case.....maybe I should do an experiment in our turf, as we have powered water jets to water the turf...hmmm good idea!
Like in any other experiment, one makes a hypothesis, sets the constants and determines the variable. Wetness refers to the mass of rain on an object. In this case the constants should be the surface area of the object (your body), the amount of rainfall (assuming the the mass of rain falling per area is the same), time spent in the rain (distance traveled by a body/speed of body), relative rain velocity (velocity of the rain - velocity of the body), angle at which the rain hits the object, density of rain. The variable would be the speed of the object.
Well we have to bear in mind that alot of assumptions are made in this case (surface are of body cant be constant throughout and the speed of the various body parts differ as well).
So the verdict then? I would think it is more as when you run, assuming that the rain is from the back, your back happens to slouch and there is more surface area that captures the rain for the same amount of time as when a person is walking, bcos we have kept time as a constant factor in this case.....maybe I should do an experiment in our turf, as we have powered water jets to water the turf...hmmm good idea!
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