first time guys. i have a disc with a bearing and a shaft through it. the disc is rotating in simple harmonic motion with a dynamic force of 14400N and speed of 2.43 rpm. i need to use electromagnets to stop this disc from rotating. questions. -where or can can i get electromagnets to stop 14400N . the max i have found is just 1000N - what calculations do i need to consider in calculating magnetic field resistance.