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Questions  

Force F1 and F2  act on a point mass in two mutually perpendicular directions. The resultant force on the point mass will be 

a
F1+F2
b
F1-F2
c
F21+F22
d
F21+F22

detailed solution

Correct option is C

F = F21+F22+2F1F2cos900=F21+F22

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