A stick of 5cm contains two parallel forces P&Q as the picture.the resultant force is 50N which is 2cm far from P force on the stick.what is the value of P&Q?
P = 30 N and Q = 20 N
We need to use methods to generate two equations as there are two unknowns.
Step 1: Resolve forces vertically
Step 2: Take moments about one point
The moments about any point are equal to the moment produced by the resultant about the same point.
Take moments about P to eliminate it from the equation (since the moment due to a force with zero perpendicular distance is zero).
Now substitute the value of Q into equation ① .