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
- 53.N
- 21.0N
- 7.0N
-
5.0N
The correct answer is: D
Explanation
Vertical resultant = 10 - 6 = 4NHorizontal resultant = 20 - 17 = 3N
R = \(\sqrt{3^2 + 4^2}\)
= 5N