Two Vectors are at 90 degrees to each other having magnitudes of 3N and 4N. The resultant is
- 5N.
- 1N.
- 7N.
Explanation from PART66Online
When two forces act at 90 degrees the resultant is found by Pythagoras: R = the square root of (3^2 + 4^2) = the square root of 25 = 5 N. Simply adding (7 N) or subtracting (1 N) the magnitudes only applies when the vectors are parallel, not perpendicular.
T
talhamalik88 asked · 5 Nov 2012
how??
Community Comments (3)
P
PART66Online
5 Nov 2012
Hey!
This question can be solved using pythagoras theorem.
This question can be solved using pythagoras theorem.
P
PART66Online
5 Nov 2012
T
talhamalik88
5 Nov 2012
ok ..thanks
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