In: Physics
When the electricity goes out on your campus, a backup source powers the servers that handle communications and the internet. Rather than use batteries, many installations use a flywheel, a heavy rotating disk that spins, very rapidly with nearly zero friction. An electric motor spins up the flywheel, which continues to spin with very little energy input. When the ststem needs to provide power, the flywheel's motion is used to turn an electric generator. A typical system has a 540 kg cylinder with a radius of 0.30 m. A small electric motor provides a constant 2.8 N-m torque to spin up the cylinder. A) Calculate the frequency for cylinder s motion? B) Calculate angular speed in rad/s? C)Calculate moment of inertia of the cylinder? D) Calculate the angular acceleration?