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Vectors

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6 Nov 2011 21:20:43 IST

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Y WORK DONE IS A SCALAR QUANTITY WHEREAS IT IS A PRODUCT OF VECTOR AND SCALAR QUANTITY i.e W=FD AND WE KNOW THAT PRODUCT MUST BE VECTOR BT WE CONSIDERED SCALAR?WHY

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Giridhar

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6 Nov 2011 21:41:37 IST

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work done is the product of 2 quantities ....force and displacement ( its displacement and not distance) both of which are vectors and its the scalar product or dot product of the two quantities which yeilds onli a scalar and never a vector...!!!

Nikhil Chauhan

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6 Nov 2011 22:09:37 IST

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ya its a dot product i.e.W=F.S=FS Cos? so its a scaler product of a vector and scalar quantity results in scalar quantity

shriya sunil deo

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3 Jan 2012 15:58:12 IST

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mathematically ,dot product of two vecor quantities is scalar and in terms of phyics work done is sclar quantity because it is described in magnitude and not in direction.

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