Is Friction the Reason Spinning Tops Eventually Stop Rotating?

In summary, inertia of a spinning top is the tendency of a spinning top to resist changes in its state of motion, and is directly proportional to its mass. The shape and speed of a spinning top can also affect its inertia, with a more compact shape and higher speed resulting in a greater inertia. The inertia of a spinning top can be changed by altering its mass, shape, or speed.
  • #1
avito009
184
4
As per Newton an object that is rotating at constant angular velocity will remain rotating unless it is acted upon by an external torque.

But we know that a top will stop rotating after some time. So does that mean that the external torque is the friction of the floor on which the top rotates?
 
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  • #2
Yes, Because the point of contact between the spinning top and the surface is not an infinitesimal point.
 

FAQ: Is Friction the Reason Spinning Tops Eventually Stop Rotating?

What is inertia of a spinning top?

Inertia of a spinning top is the tendency of a spinning top to resist changes in its state of motion. It is a measure of how difficult it is to change the speed or direction of the spinning top.

How is inertia of a spinning top related to its mass?

The inertia of a spinning top is directly proportional to its mass. This means that a spinning top with a greater mass will have a greater inertia, making it harder to change its state of motion.

Does the shape of a spinning top affect its inertia?

Yes, the shape of a spinning top can affect its inertia. A spinning top with a more compact shape will have a greater inertia compared to a spinning top with a more spread out shape of the same mass.

Can the speed of a spinning top affect its inertia?

Yes, the speed of a spinning top can affect its inertia. A spinning top with a higher speed will have a greater inertia compared to a spinning top with a lower speed of the same mass.

How can the inertia of a spinning top be changed?

The inertia of a spinning top can be changed by altering its mass, shape, or speed. For example, adding weight to a spinning top will increase its inertia, while decreasing its speed will decrease its inertia.

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