2 ms·
It's my fault - I misread R_d as diameter and not radius. The disc is indeed 5mm in radius (10mm in diameter). With this value, the speed of the disc edge is 65
by nneonneo 10y ago
It's my fault - I misread R_d as diameter and not radius. The disc is indeed 5mm in radius (10mm in diameter). With this value, the speed of the disc edge is 65m/s or about 145mph.