In a Prony brake dynamometer, the spring balance reading is \(200 \mathrm{~N}\), radius of brake drum is \(0.3 \mathrm{~m}\), and distance between the drum axis and hinge of the blocks is \(0.6 \mathrm{~m}\). Determine the pressure exerted on the drum by tightening the screw, tangential force acting on the brake drum, and the output power of the prime mover if the record speed is \(300 \mathrm{rpm}\). Take coefficient of friction equal to 0.25 .