Need help at "Forming an equation based on the fact that all the vertical forces must be in equilibrium". I'm to calculate the reactions at the supports A and B by doing:
(i) Forming an equation based on the fact that all the vertical forces must be in equilibrium
(ii) Taking moments about A to find the reaction at B
(iii) Using your value for the reaction at B in the equation formed in part (i) to find the reaction at A
I thought that the equation that I need to form would have been an equation for finding moments,
moment = force x distance.
The Attempt at a Solution
For part (i) I done:
M = (-30 x 0.5) + (-25 x 2.5)
It states that they are in equilibrium so does that mean I need to add '(30 x 0.5) + (25 x 2.5)' to the equation so that it become an equilibrium? Or is what I'm doing for part (i) actually what I should be doing for part (ii) as I need to take moments for that section of the question? If so then what equation must I form for part (i)?