Village Idiot Method

1. Vector (FBD) Diagram
2. Coordinate System
3. Resolve vectors into x & y components or (parallel and perpendicular)
4. X: F${}_{net}$ = m${}_{total}$ a${}_x$
5. Y: F${}_{net}$ = m${}_{total}$ a${}_y$

Example Problem §

Helicopter Pilot and you want to take off

m = 1150 kg a = + 3 $\frac{m}{s^2}$ F${}_T$ = ?

We don’t want the thrust to be equal to the weight as it’ll just hover

If the helicopter is pushing air down according to Newton’s 3rd law it’s being pushed up

F${}_{net}$ = m${}_{total}$ a = F${}_t$ - mg

See this method in “Elevator Problems”