Vector Mechanics For Engineers -

You’ve heard it a thousand times, but it bears repeating:

Remember that a pin support has two reaction forces ( ), while a roller only has one ( Nycap N sub y Vector Mechanics for Engineers

Don't sweat whether a force is pushing or pulling. Pick a direction; if your final answer is negative, it just means the force acts in the opposite direction. 2. Vector Notation is Your Friend You’ve heard it a thousand times, but it