Force =i +5j +7k acts on a particle and displaces it through. S= 6i + 9k calculate the work done if the force is in Newton and displacement in metre
Answers
Answered by
1
Answer: Work done = 69 units
Explanation: W=F.S
Take dot product of both the vectors
W= ( 1i . 6i ) + ( 5j . 0j ) + ( 7k . 9k )
W= 6 + 0 + 63 [i.i = j.j = k.k = 1]
W= 69 units
Similar questions