Slide for comparing sliding times

Easy physics experiment to compare slide time for a straight segment and a curved path. The curved path is not a cycloid because cycloid has inconvenient behavior on the beginning (high derivative). Nevertheless it works well and demonstrates that the straight line in not the time-winner. To be used with smaller metallic coins, for example 10 euro-cent. voluntary contributions: BTC: bc1q8e9gu2vvuv6cd2rmlwalh2474ef47w3cmweecz ETH: 0xdc08B0ff237766F0a36EDD520704b8228DB7Dc9a MONERO: 83yoZoDBhBH7yqGLmnxGdaAGr3petrog8RTarapKBVFiHawfasd6GmxavgGVB7a4osdJu8AFARiPnUJ7nx9QTEsu5jQsT7W