the resultant of two forces is is 30N when they are mutually perpendicular if the minimum resultant is 7N find the two forces
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a - b = 7
( a^2 +b^2) ^1/2 = 30
b^2 + ( b+7) ^2 = 900
( a^2 +b^2) ^1/2 = 30
b^2 + ( b+7) ^2 = 900
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