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(주)숲속의샘 |
한국 |
$10.50 |
$60.00 |
P00000OP |
Select item with details above |
Name | Quantity | Price |
---|---|---|
Twister switch / science gifted / teaching aids / after school / Goldberg | 10.5 ( 60.00) |
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Beads round and round. Learn gravity, inertia, centrifugal force and pendulum movement.
Material
Corrugated cardboard, Rubber, Plastic, Steel, Nylon
Components
Body, Bead pedestal, Rod holder, Bead (weight), Black rubber ring, Transparent rod, Snap button, Thread
Goldberg connector.
When the other marble(ball) knocks down the fixture, the ball(weight) on the transparent rod will rotate.
It is a device that starts the marble of another device while rotating additionally.
'Twister Switch' Principle of Science
Gravity : The force by which objects on the earth are drawn toward the center of the earth.
Inertia : The force by which objects on the earth are drawn toward the center of the earth.
Potential energy by gravity : The property of an object trying to continue in a state of stationary or constant motion unless it is subject to external forces.
Centrifugal force : The force that acts from the center to the outside when an object performs a circular motion.
Pendulum movement: A fixed hanging object under the influence of gravity moves in a constant cycle.
1 step. Make a bead pedestal
① Fold the bead (weight) pedestal plate along the fold line.
② Secure the front and back of the bead plate with snap buttons.
2 step. Make a body
① Fold the main body along the fold line.
② Secure with snap buttons on 4 places of main body.
*Use a (-)button in a large hole, a (+)button in a small hole. Hold down with your finger or turn to lock it.
3,4 step. Make a rod holder & Connect the main body to the rod holder
① Fold the rod holder along the fold line.
&
① Insert the folded bar holder into the grooves of the main body and fix it.
5 step. Make a weight
① Put a bead on one end of the thread and tie the knot twice.
② Tighten the black rubber ring twice with thread on the other side of the thread.
③ Place a black rubber ring on one end of the clear rod.
*Insert the black rubber ring about 10mm from the end of the transparent rod.
④ Insert the transparent rod with the black rubber ring into the groove of the body.
⑤ Secure it with a black rubber ring to the transparent rod on the bottom of the body.
6 step. Connect the main body to the rod holder
① Insert the black rubber ring connected to the thread at the end of the transparent rod.
② Wrap the beads on a transparent rod as shown in the picture.
*Place the bead holder next to the completed twister switch and place the bead.
7 step. Connect your Goldberg device
① Place a domino next to the bead holder. knock down the dominoes and observe how the next device works.
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