1.

The work done by the Variable force is defined by_____

Answer»

`int_(f)^(i) F xx VEC(dv)`
`int_(f)^(i) vec(F) xx vec(DR)`
`int_(i)^(f) vec(F) . vec(dr)`
` int_(i)^(f) vec(dr) xx VECF`

SOLUTION :`int_(i)^(f) vec(F) . vec(dr)`


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