Two forces of magnitude 12 N and 8 N are acting at a point. If
the angle between the two forces is 60°, determine the magnitude
of the resultant force?
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A = 12 N B = 8 N Ф = 60 cos Ф = 1/2
R² = square of resultant by parallelogram law = A² + B² + 2 A B cos Ф
= 144 + 64 + 2 * 12 * 8 * 1/2 = 304
R = √304 =
R² = square of resultant by parallelogram law = A² + B² + 2 A B cos Ф
= 144 + 64 + 2 * 12 * 8 * 1/2 = 304
R = √304 =
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