consider a force vector F=i+j+k. Another vector perpendicular of F is.
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if any vector as displacement vector is perpendicular to the force vector , then work done by the force vector will always zero
Vaiarathe:
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Answer:
F = I +j + k
qnd it is perpendicular to F then
when we do dot product of this vector then it will come ZERO
F.s cos@ = 0
I + j + k . s Cos@ = 0
solve the rest
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