# What is the tennis racket theory?

The Tennis Racket Theorem states that an object with three unique moments of inertia, rotation about the axis of intermediate moment of inertia is unstable, while rotation about the other two axis is stable.

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## Beside this, how does the dzhanibekov effect work?

The Dzhanibekov Effect is also known as the Tennis Racquet Theorem because it is perfectly illustrated using a tennis racquet. The axes with greatest and smallest moments of inertia will spin perfectly, the intermediate axis will spin wildly. …

Subsequently, why can’t you flip a phone end over end? You can spin the object along all three axes, it’s just that rotation along one of the axes will not be stable. If you gave your phone a perfect initial spin about any axis and there was no other force to influence affect its motion, it would spin smoothly about any axis you wanted.

## Also question is, what causes intermediate axis theorem?

Comments: The intermediate axis theorem is a consequence of Euler’s equations for the force-free motion of a rigid body, but it is by no means physically obvious and we don’t have an intuitive understanding of the motion of a rigid body with three unequal principle moments of inertia.

## Why are spinning objects more stable?

does a spinning object release a type of mass in the direction of the spin giving it angular momentum. … The faster an object is spinning, the more angular momentum it has, and the more torque it will take to change this direction, making bicycles more stable at higher speeds, and tops also more stable at higher speeds.

## Why do objects spin in space?

Our planets have continued spinning because of inertia. In the vacuum of space, spinning objects maintain their momentum and direction — their spin — because no external forces have been applied to stop them. And so, the world — and the rest of the planets in our solar system — keeps spinning.

## Why are rotating bodies stable?

Since angular momentum is a vector quantity a couple is needed to change the angular momentum of a body. It therefore follows that spinning objects are more stable than ones that do not spin.

## Why do phones flip weird?

Because the three moments of inertia of a smart phone are different sizes, its motion depends on which axis it spins around. As it turns out, the way it spins around the intermediate axis is unexpected.

## Do you think the rotation of the Earth is important why?

As the Earth rotates, each area of its surface gets a turn to face and be warmed by the sun. This is important to all life on Earth. The sun affects everything from the weather we experience to the food we eat, and even our health.