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Cool goIITian

Joined:	1 Apr 2008
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5 Apr 2008 13:33:19 IST

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Why is during the rainy season...when rain falls on the car...the rear window remains dry.

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Why is during the rainy season...when rain falls on the car...the rear window remains dry.

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Glenn Jasper

Hot goIITian

Joined: 7 Oct 2007

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5 Apr 2008 13:36:33 IST

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hey, that depends on the angle at which the rain is falling!!

Vaibhav Madamshetty

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Joined: 25 Aug 2007

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5 Apr 2008 13:39:59 IST

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IT MAY DUE to rel velocity
becouz rel vel. will be paralel to rear window

please say if iam crrect or not

Tanmay

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Joined: 6 Sep 2007

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5 Apr 2008 13:43:48 IST

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ya the relative velocity between car and the rain may be parallel to the rear window so it remains dry if the car is moving fast enough.....

Shreya

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5 Apr 2008 13:46:08 IST

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may be the intermolecualr forces between the molecules of the rare window are greater than the forces between the rain drops ang the window(surface tention), so that it dosent become wet

Tanmay

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5 Apr 2008 14:09:09 IST

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can it be like that???

siddharth raghuraman

Cool goIITian

Joined: 28 Dec 2007

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5 Apr 2008 14:17:27 IST

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its bcoz when the cars moving..due to the effective velocity of the car, the rain drops make an obtuse angle with the car(if u draw a normal to the car on the top,the rains come from the second qyadrant to the origin{apear to})...so depending on the angle of the rare window it either gets wet or does not..the probabilty of getting wet depends on the velocity of the car and the angle of the window...if the car's rare window is straight i.e paralel to the normal,then it can never get wet...if the speed is less and the angle of window is more then more chances of getting wet and if the angle is less and the speed is more less or no chances of getting wet...

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