how to make science working model of a merry-go-round

The purpose of creating a merry-go-round working model is to demonstrate principles of rotational motion, mechanical engineering, and simple electrical circuits.

This project helps students understand how a basic motor can convert electrical energy into mechanical energy to produce rotational movement.

Creating a working model of a merry-go-round using cardboard, a DC motor, a switch, a 9V battery, and a cardboard pipe can be an exciting and educational project.

Materials Needed:

• Cardboard (for the base and platform)
• Cardboard pipe (for the central axis)
• DC motor
• Switch
• 9V battery
• Battery holder
• Small gears or pulleys (optional for better motion)
• Hot glue gun or strong adhesive
• Scissors or a craft knife
• Ruler
• Marker

Step by Step Video Instructions on Merry Go Round:

1. Prepare the Base:
• Cut a large circular piece of cardboard to serve as the base of the merry-go-round. This should be stable enough to support the entire structure.
• Optionally, you can make the base square or rectangular, as long as it provides stability.
2. Create the Central Axis:
• Take the cardboard pipe and cut it to the desired height of your merry-go-round. This will be the central axis around which the platform will rotate.
3. Prepare the Rotating Platform:
• Cut another circular piece of cardboard that will act as the rotating platform of the merry-go-round. Make sure it is smaller than the base but large enough to fit the desired number of seats or figures.
4. Mount the DC Motor:
• Attach the DC motor to the center of the base using a hot glue gun or strong adhesive. Ensure that the motor’s shaft is upright and centered.
• If you have gears or pulleys, you can attach one to the motor’s shaft to help with the motion transfer.
5. Connect the Central Axis to the Motor:
• Carefully align the cardboard pipe (central axis) with the motor’s shaft and attach it securely. You can use a hot glue gun or adhesive to ensure it is well-centered and stable.
• If using gears or pulleys, connect them now to ensure smooth rotation.
6. Attach the Rotating Platform:
• Glue the center of the rotating platform to the top of the central axis. Make sure it is level and can rotate freely around the central axis.
7. Electrical Connections:
• Connect the DC motor to the switch and the 9V battery holder. Ensure you have a good understanding of basic electrical connections:
• One wire from the motor goes to the switch.
• The other wire from the switch goes to one terminal of the battery holder.
• The second wire from the motor goes directly to the other terminal of the battery holder.
• Secure the switch and battery holder to the base or side of the merry-go-round for easy access.
8. Decorate the Merry-Go-Round:
• Use additional pieces of cardboard to create seats, figures, or animals to place on the rotating platform.
• Decorate the platform and base with paint, markers, or stickers to make it more attractive and realistic.