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8 Sep 2009 00:23:46 IST

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A BODY CONSTRAINED TO MOVE ALONG Z AXIS OF A COORDINATE SYSTEM IS SUBJECTED TO CONSTANT FORCE GIVEN

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A BODY CONSTRAINED TO MOVE ALONG Z AXIS OF A COORDINATE SYSTEM IS SUBJECTED TO CONSTANT FORCE GIVEN BY F=-i+2j+3k.where i,j,k are unit vectors along x,y,zaxis.what is the work done by the force in moving the body a distance 4m along z axis

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kittufn

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Joined: 8 Sep 2009

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8 Sep 2009 00:25:09 IST

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please give me a quick reply

wHaT tHe F

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Joined: 18 Aug 2009

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8 Sep 2009 01:18:29 IST

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u havent mentioned the unit of the force applied so i assume it to be in newtons ........ now work done by i component of force =F_i.S = 0 since displacement =0

work done by j component of force =F_j.S = 0 since displacement =0

work done by k component of force = F_k.S = 3 x 4 =12 J [ considering dat F_k and S are in same direction )

Soumen Goswami

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3 Oct 2009 17:03:34 IST

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Good answer @whatthe

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