« on: 07/04/2023 11:34:55 »
I am asking this because I have never tried, it's hard to find a cassette player now. But I was thinking that when we were playing a cassette inside a fast moving car, the speed of the tape would be considered faster only for those outside the car, but for those inside the car the speed of the casstte would be totally normal and the speed of sound would be totally normal because the air is contained and travelling within the car. The same could be said for any spinning things, examples, a drill, a fan or a turntable inside the ISS for us on Earth would be spinning much faster, because we add the speed of the ISS to it, but for those inside the ISS the drill speed is normal, and the turntable speed is the same normal speed, with a normal sound. But let's say I am in my room, I have a cassette player (I don't... ) with blue tooth speakers (so the speakers are not moving), and I spin the cassette around me with a rope: in this case, should I add the rope speed to the cassette speed, should I hear a different sound, or will I hear a normal sound without any acceleration?