R
raymiway
Guest
A car is designed to get its energy from a rotating flywheel with a radius of 1.4 m and a mass of 358 kg. Before a trip, the fly-wheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5050 rev/min.
a) Find the kinetic energy stored in the flywheel. Answer in J
b) If the flywheel is to supply energy to the car as would a 8.5 hp motor, how long could the car run before the flywheel would have to be brought back up to speed? Answer in in units of h.
a) Find the kinetic energy stored in the flywheel. Answer in J
b) If the flywheel is to supply energy to the car as would a 8.5 hp motor, how long could the car run before the flywheel would have to be brought back up to speed? Answer in in units of h.