- #1
influx
- 164
- 2
For figure 1.2, if you take moments at the point where H acts, then you get (assuming moments are positive anti-clockwise):
-RCos(theta)(0.4) + 60(0.2) = 0
Rearranging gives:
Rcos(theta) = 30
However, according to the mark scheme (which takes moments at the point where R acts) Rcos(theta) = 60
What have I done wrong?