Hula Hoop Saturn | English
Channel: Arvind Gupta
Date: 2016-08-11

In this interesting model a toy motor spins a Ping-pong ball. A card sheet ring placed on the spinning ball keep spinning. It looks like SATURN’S RING. You will need a 6-volt toy motor, battery, ping-pong ball, glue, pulley and a card sheet ring. Well as you connect the motor to the battery, the motor spins at a high speed. Fix the motor with its shaft pointing in a wooden box lid. Two wires connect the motor terminals to the battery. The motor spins when connected to the battery.
Stick a ping-pong ball to a plastic pulley with strong glue. Press fit the pulley on the motor shaft. This card sheet ring is oversize and will easily slip into the ball. Connect the motor to the battery. The ball will spin at a fast speed. Now gently place the card ring on the spinning ball. Hold the ring for a while and then let go. The card ring will keep spinning and look just like the SATURN’S RING. Why does the ring spin and not fall down? The ball touches and kicks the ring numerous times and makes it spin. Even if you invert the motor, the card ring still spins and does not fall down. 

This work is supported by IUCAA (www.iucaa.in) and TATA Trust (http://www.tatatrusts.org/) and (www.tata.com/aboutus/sub_index/Tata-trusts)
TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org

Credits:,Ashok Rupner, Manish Jain, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar