6/116 Motive power for the experimental 10-Mg bus comes from the energy stored in a rotating flywheel which it carries.

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6 116 Motive Power For The Experimental 10 Mg Bus Comes From The Energy Stored In A Rotating Flywheel Which It Carries 1 (30.65 KiB) Viewed 23 times

6/116 Motive power for the experimental 10-Mg bus comes from the energy stored in a rotating flywheel which it carries. The flywheel has a mass of 1500 kg and a radius of gyration of 500 mm and is brought up to a maximum speed of 4000 rev/min. If the bus starts from rest and acquires a speed of 72 km/h at the top of a hill 20 m above the starting position, compute the reduced speed N of the flywheel . Assume that 10 percent of the energy taken from the flywheel is lost. Neglect the rotational energy of the wheels of the bus. The 10-Mg mass includes the flywheel. Answer N = 3720 rev/min