A porter governor has an equal arm's length of \(220 \mathrm{~mm}\) long and pivoted at the axis of rotation. Each ball has a mass of \(5 \mathrm{~kg}\) and the mass of central load on the sleeve is \(20 \mathrm{~kg}\). When the governor begins to lift, the radius of rotation of the ball is \(100 \mathrm{~mm}\) and \(120 \mathrm{~mm}\) when the governor is at maximum speed. Find the minimum and maximum speeds and range of speed of the governor.