Can anyone work this out in entirety?
a 200 kg flywheel is at rest when a constant 300 nm couple mis
applied at time t=0. at t=28 s the flywheel reacheds itsrated speed
of 2400 rpm and couple is removed. knowing thatthe radius of
gyration of the flywheel is 400 mm, determine (a) theaverage
magnitude of the couple due to kinetic friction in thebearing, (b)
the time at which the flywheel comes torest.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature