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Diksha Singh
Jun 19, 2015, 06:54 AM
The vector sum of two forces is perpendicular to their vector difference. In that case the forces are.. Options :- a) equal to each other b) equal to each other in magnitude c) not equal to each other in magnitude... Ans is b... explanation??

ebaines
Jun 19, 2015, 07:25 AM
Hint: what is special about the dot product of perpendicular vectors?

Diksha Singh
Jun 19, 2015, 08:00 AM
Hint: what is special about the dot product of perpendicular vectors?
Get it! Thank you.