Saved Bookmarks
| 1. |
in the following figure w = 20 n, f = 25 n.. (i) find the value of angle θ. (ii) find the tension in the string. |
|
Answer» It is obvious from figure that angle between T and W is (180-theta). Again the angle between T and F will be (90+theta) So by Lami's theorem T/sin90 = F/sin(180-theta)= W/sin(90+theta) => T=F/sin (theta)=W/cos(theta) Tsin(theta)= F andTcos(theta)=W Hence tan(theta)=F/W So (theta) = arctan(F/W) And T= √(F^2+W^2) N |
|