A Top Is Set Spinning So That the Rotation Is

question 13

Multiple Choice

A top is set spinning so that the rotation is counterclockwise around its axis when viewed from above. When the top is placed on a level surface it happens that its axis of rotation is not quite vertical. Viewed from above, which way does the rotational axis of the top precess?

• A) clockwise
• B) counterclockwise
• C) It's random, if it starts clockwise it will continue clockwise, and vice versa, i.e., a 50% chance either way.
• D) The direction depends on the little shove given to the axis when the top is placed on the surface.
• E) In the northern hemisphere it will be clockwise, in the southern hemisphere it will be counterclockwise.

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Definitions:

Metallic Luster

A type of shine from the surface of a mineral that resembles the appearance of polished metal, indicating a certain mineral composition.

Dilute HCl

A solution made by mixing hydrochloric acid with water, commonly used in chemical analysis and experiments to test for the presence of carbonate minerals.

Crystal Form

The external shape displayed by a crystal or a group of crystals that grew together, reflecting the symmetrical arrangement of the internal lattice.

Surface Tension

A physical property of liquids that causes them to behave as if their surface is covered with a stretched elastic membrane, due to intermolecular forces.