two forces 5N and 7 N are acting at a point at an angles 30degree in between them find the magnitude of the resultant force
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Given forceF
1
=5N and F
2
=7N and θ=60
We know resultant force F=
5
2
+7
2
+2(5)(7)cos60
F=
25+49+35
F=
109
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