In a Wilson-Hartnell spring loaded governor, the two balls are of 5 kg each, which are connected by two springs. The speed of the governor is 600 rpm in its mean position. The radius of the governor ball is 150 mm. The tension in each spring is 1200 N. Find the tension in the other spring and its stiffness, if the speed is 650 rpm when the sleeve moves up by 20 mm from mean position and stiffness of each spring is 10 N/mm.