An old-style elevator is connected to a counterweight by a cable that passes over a rotating disk that is 3.7 meters in diameter. With the cable not slipping and turning with the disc, the clevator is raised and lowered by turning the disc.a. How many turns should the disc make to raise the clevator at 0.5 m/s.b. The elevator should accelerate at a quarter of the acceleration due to gravity to start the clevator moving. Calculate the disc's angular acceleration.c. How many revolutions has the disc spun when it has raised the elevator 5m between floors?

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