Posted by rezny on Wednesday, January 16, 2013 at 12:22pm.
two forces 20N each are inclined at 100 degree to each other.find the single force that will; replace the given force system balance the given force system

physics  Elena, Wednesday, January 16, 2013 at 4:19pm
α =(360⁰  2•100⁰)/2=80⁰
F12=sqrt{F1²+F2²2•F1•F2•cosα}=
=sqrt{400+4002•20•20•cos80⁰}=25.71 N
Direction:
F1 is directed along the positive Xaxis ,and F2 is 100⁰ measured from
the positive X axis with the counterclockwise, F is 230⁰measured from
the positive X axis with the counterclockwise
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