Why is Work done, that the force and distance are given given in form of vector is solved with dot product method and not cross product method
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Explanation:
Only the component of the force (vector) in the direction of motion does work (scalar). This is expressed as the dot product (scalar product) of the two vectors, force and distance, which uses the cosine of the angle between them. But in component form, things are easy.
F=ai+bj=(a,b)
d=xi+yj=(x,y)
F.d=Fdcos(theta)=ax+by
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