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F=x i + 2y j Find out work done by F to move from point A(1,2) to point B(0,1)

F=x i + 2y j
Find out work done by F to move from point A(1,2) to point B(0,1)

Grade:11

1 Answers

Asutosh Gaud
29 Points
2 years ago
change in position vector; rA – rB= -1i – 1j
work done = dot product of force and displacement = (xi + 2y j).(-1i – 1j) =  -(x + 2y) newton

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