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Four co-planar forces of magnitudes 10N, 17N, 6N and 20N act at point O as shown in the ...



Four co-planar forces of magnitudes 10N, 17N, 6N and 20N act at point O as shown in the above diagram. Determine the magnitude of the resultant force
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  • A 53.N
  • B 21.0N
  • C 7.0N
  • D 5.0N
Correct Answer: Option D
Explanation:
Vertical resultant = 10 - 6 = 4N
Horizontal resultant = 20 - 17 = 3N
R = \(\sqrt{3^2 + 4^2}\)
= 5N

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