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[Post New]26 Apr 2008 16:33:59 IST
    Subject: Re:QUE IN MECH... PLZ HELP ME OUT..RATES ASSURED..
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anchitsaini (4352)

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Olaaa!! Perrrfect answer. 796  [982 rates]
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7) \\ \\<br/>\mbox{Let the velocity after 5s be u , since no force}\\ \\ \mbox{ is acting now it will move with constant velocity u , thus}\\ \\<br/>ut=400 \\ \\<br/>u=80 \\ \\<br/>Also \\ \\<br/>u=80=at=5a \\ \\<br/>a=16 \\ \\<br/>F=ma=400a=6400N
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