Posted by **J** on Monday, May 7, 2012 at 8:28pm.

Three forces of 5 N, 8 N, and 10 N act from the corner of a cube along its edges. Using Cartesian vectors, find the magnitude of the resultant force.

- Calculus -
**Reiny**, Monday, May 7, 2012 at 8:55pm
magnitude^2

= hypotenuse^2

= 5^2 + 8^2 + 10^2

= 189

magnitude =√189 = appr 13.75

or

resultant = 5(1,0,0) + 8(0,1,0) + 10(0,0,1)

= (5,8,10)

maginitude of resultant = √(25+64+100) = √189 as above

- Calculus -
**J**, Monday, May 7, 2012 at 11:35pm
thank you :)

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