In the mechanism shown in Fig. P2.5, motor drives the winch drum through a reduction gear with a gear tooth ratio of 0.1. The friction torque at winch shaft is 15 N-m and at motor shaft 10 N-m. Motor speed is 1500 rpm. Calculate the equivalent moment of inertia of the drive referred to motor shaft and motor torque if gears have an efficiency of 90%. a = 0.1 Motor J₁ = 0.5 kg-m² Gear box Jg = 0.15 kg-m² at the motor speed 0.2 m Winch drum J=1 kg-m² Cable Load 500 kg