Two Vectors are at 90 degrees to each other having magnitudes of 3N and 4N. The resultant is
- 5N.
- 1N.
- 7N.
Explanation
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.
talhamalik88 asking:
how??
Community Comments (3)
D
dimky Posts: 514 05.11.2012 / 17:42
Hey!
This question can be solved using pythagoras theorem.
This question can be solved using pythagoras theorem.
D
dimky Posts: 514 05.11.2012 / 17:42
T
talhamalik88 Posts: 2 05.11.2012 / 22:46
ok ..thanks
Please Sign In to post a comment.