A turbine rotor weighs 20 tonnes and has a radius of gyration of 1.75 meter when running at 200…

A turbine rotor weighs 20 tonnes and has a radius of gyration of 1.75 meter when running at 200 rpm. It is suddenly relieved of part of its load and its speed rises to 205 rpm in 1 sec. Find the unbalanced uniform turning moment.