Question on: WAEC Physics - 2013
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
A
53.N
B
21.0N
C
7.0N
D
5.0N
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Correct Option: D
Vertical resultant = 10 - 6 = 4N
Horizontal resultant = 20 - 17 = 3N
R = (\sqrt{3^2 + 4^2})
= 5N
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