Saved Bookmarks
| 1. |
two forces 80N and 70N act simultaneously at a point.Find the resultant force,if the angle between them is 150° |
|
Answer» f1 =80 N f2 = 70N F=√f12 +f22+f1. f2 cosΦ F=√6400+4900+5600cos 150° F=√ 11300+5600 . -√3/2 F =√11300+2800.-√3 F=10√113-28√3 F=10√113-(28x1.73) F=10√113-48.44 F=10√64.56 F=10×8.034 F 80.34N |
|