pot_kapil

@John Cuthber, I'm trying to replicate the gravity light described in the following video: for scientific study.A shaft would be attached to the gear system and connected to a generator to power the LED. Hope this makes thing clear.

hi, I need to design a gear system which uses the linear motion of a descending mass (20 kg) and convert it to rotary motion.The required output speed is 150 rpm. It would be of great help if someone could help me with the following.Thanks in advance. i.The technical specifications of the gears i can use in this case. ii.How can the mass (20 kg) be coupled with the gear system.