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[Post New]5 Aug 2007 08:29:13 IST
    Subject: Vector Algebra
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75395123 (0)

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A man pulls a rope attached to ground with 80N. The rope makes an angle of 40o to the ground. Calculate
            i) The effective value of the pull tending to move the stone along the ground and
           ii) The force tending to lift the stone.
    
[Post New]5 Aug 2007 09:05:29 IST
    Subject: Re:Vector Algebra
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ANYONE PLEASE REPLY. IT'S URGENT
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[Post New]5 Aug 2007 09:20:33 IST
    Subject: Re:Vector Algebra
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please try and reply
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[Post New]5 Aug 2007 10:09:21 IST
    Subject: Vector Algebra
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krishna.gopal (2397)

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The component of force along horizontal direction = 80*cos(40) which is pulling force.

The component of force along vertical direction = 80*sin(40) which is lifting force.
Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
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[Post New]6 Aug 2007 00:29:46 IST
    Subject: Re:Vector Algebra
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abhi_2cool (0)

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hi dude......
this ques is simple..... 
i don't know what prob r u facing in this !!!!!
see,
clearly the force which is causing to move the stone in the horizontal direction is its component along the horizontal i.e. 
F cos  = 80* cos 40 80* 0.62 =49.6 N
 
& similarly.
the force which is tending to lift the stone is the vertical component of this force i.e.
 F sin  = 80* sin 40  80* 0.55 =44 N
 
thats it.......
rate if u got it.....:)
Till now, fate was leading me to somewhere so called nowhere, but now, itz time for me to lead it somewhere & it won't be nowhere this time..........
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