Inertia experiments for kids first: Inertia experiment with a stationary pin and a strip of paper
The inertia of a body can be demonstrated with the followingnice try, you just have to be fast enough.
This experiment demonstrates the inertia of a body very clearly.One only needs a pen or any elongated object that you canstand up vertically and falls down at the table with vigorousshaking, and a narrow strip of paper.
You put the paper strip on the edge of the table and places thestylus. Well it depends on the strip as a jerk to draw out underthe pen. This movement is fast enough, then the pin remains in its place and not fall. The reason is the inertia of the pen. Inertiaof a body called the insistence of one state of motion (in thiscase the “non-movement”) to be maintained.
Inertia experiments for kids second: The centrifugal force in rotating assemblies
In a rotating body occurs due to the centrifugal force of inertia.What is the law of inertia about?
It states that a body that is left to itself, in its state of motionremains, he is lazy.
The effect of centrifugal force can be shown nicely with various experiments. In our case we have two paper clips fastenedtogether and hung on a piece of twine. The thread is attached to a motor shaft of a small DC motor. After resting the paper clips and swing the motor is no longer eingschaltet. Rotate after a short time, the paper clips go very quickly, focusing in horizontal position. This is caused by centrifugal force.
It may also explain events in everyday life as examples of this power. For example, are raised in a high-flier seats during a tripfar up or out, and the more so the faster the carousel rotates.During a quick drive in tight corners objects slipping from sideto side in the trunk.
Inertia experiments for kids third: The centrifugal force and a small wooden ring
This test shows and what can do the centrifugal force (the “centrifugal force”) with a small wooden ring.
In the following experiment we will need a small electric motor.Here you can use recycled components, e.g. You can expand from damaged DVD or CD drives use the drive motors and. To the axis of the engine a cord is hung, you can Reconnect them, stick or fasten with a rubber ring. At the end of the rope we hang on a ring that is easily fixed at any point. This can be a plastic or wooden ring, do not care.
In our case, beat my daughter in front of a wooden ring that is used for curtains. Now the engine is turned on. Depending on the length and thickness of the fleece or yarn, the wood begins to ring around an axis along the line to turn.
If the engine too fast and the cord to be thin and very hard at the same time, the ring, then the twisted thread very quickly. It helps to slow the engine. This can happen with one or more additional series-connected consumers, or by using a lower voltage (eg 1.5V).
If now the rotation is faster, then the ring works from the rotation around the axis along the thread. He is now trying to put a rotation around an axis by 180 degrees to reach virtually perpendicular to the center of the ring. Initially, the not quite succeed, staggers the ring. To achieve when using a very thin twine, adequately long and a massive ring, we have succeeded, at high engine speeds, a very stable rotation around this new axis.
Why is this so?
The centrifugal force is an inertial force. It occurs in all rotating systems. Let us place ourselves in a Kettenkarussel. Here, once the Carousel rotates, the passengers pulled out. There are experiments with fast-rotating, circular paper targets. These are the centrifugal force is very hard and stiff and may even cut softer items.