Friday, April 12, 2013

Tyres

When I am small I used bicycle to go to my school..........Whenever the air in the tyre is reduced then I went to air filler shop to fill the tyre with air........when he is doing that job..... suddenly a doubt was raised  Can tyres be filled with water instead of air?..........Why we can't do ?


ans:   Generally tyres of vehicles are filled with air to absorb shocks generated as the vehicle moves on uneven roads,and make the ride comfortable.

        This shock absorbing capacity is by a property of compressibility.On Application of Pressure air is easily compressed where as water is not compressible.So if one starts filling tyres with water the ride will not be comfort as shocks are passed on to the vehicle.
       
        And also Water filled tyres increase the rolling resistance of vehicles because of the increase in weight. More fuel is wasted in overcoming this resistance

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