Grade 11Mechanics
F=x i + 2y jFind 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)
1 Answer
Anonymous User
Approved Tutor Answer8 Years agochange 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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