The force acting on an object is 5j + k and displacement of object is 3î +49. Then what is the component of force along displacement
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Answer:
Force =F = 5i + 4j
Displacement =3i +4j
Time =3s
Now works done is
W=F. S
W=(5i + 4j +0k) * (3i + 0j + 4k)
W=15 + 0+ 0
W= 15j
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