1.

The resultant of the three vectors vec(OA), vec(OB) and vec(OC)shown in figure is

Answer»

r
2r
`r(1+sqrt(s))`
`r(sqrt(2)-1)`

SOLUTION :`vec(OC)` and `vec(OA)` are cqual in magnitude and inclined to each other at an angle of `90^(@)`. So their RESULTANT is `sqrt(2r)`. It acts mid-way between `vec(OC)` and `vec(OA)`, ie., along OB. Now, both r and `sqrt(2r)` are along the same line and in the same direction .
Resultant = `r +sqrt(2r) = r (1+sqrt(2))`


Discussion

No Comment Found

Related InterviewSolutions