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1. |
If the magnitude of the resultant of two forces F and 2F acting at a point O is 50 N, and the included angle between F and 2F is 90°, then what is the magnitude of F ? |
A. | F = 10 N |
B. | F = 502 N |
C. | F = 252 N |
D. | F = 105 N |
Answer» E. | |