Mechanics 1 URGENT HELP Watch
AC = 2m and AD = 5m. When a particle of weight 30 N is attached to the bar at point E the bar is on the point of tilting
about C. Calculate the distance AE.
How do you know to place E to the right/left of C? I placed to the left, making the turn anticlockwise and used anticlockwise as positive, giving me a wrong answer?
And as it's on the point of tilting about C, you can resolve vertically to get the normal reaction at C.