1.

Find the work done if a particle moves from position r_(1)=(3hati+2hatj-6hatk) to a positon vecr_(2)=(14hati+13hatj-9hatk) under the effect of force vecF=(4hati+hatj+3hatk)N.

Answer»

Solution :`VECR=vecr_(2)-vecr_(1)=11hati+11hatj-3hatk`
`vecF=(4hati+hatj3hatk)N`
`:.W=vecF.vecr=46J`


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