Related Experiment Video

Updated: Jun 24, 2026

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 16, 2013

Variations in the rotation of the Earth

W E Carter, D S Robertson, J E Pettey

    Science (New York, N.Y.)
    |June 1, 1984
    PubMed

    More Related Videos

    Surface Mapping of Earth-like Exoplanets using Single Point Light Curves06:48

    Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

    Published on: May 10, 2020

    Using Generative Art to Convey Past and Future Climate Transitions06:10

    Using Generative Art to Convey Past and Future Climate Transitions

    Published on: March 31, 2023

    Related Concept Videos

    Global Climate Change01:50

    Global Climate Change

    Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
    Gyroscope: Precession01:24

    Gyroscope: Precession

    Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
    Acceleration due to Gravity on Earth01:21

    Acceleration due to Gravity on Earth

    According to Newton's law of gravitation, the gravitational force on a body is proportional to its mass. According to Newton's second law of motion, the acceleration produced by an external force is inversely proportional to the force. Hence, the acceleration of an object under an external force of gravitation is independent of its mass.
    The acceleration of an object close to the Earth, because of the Earth's gravitational pull, is called the acceleration due to gravity. It is always directed...
    Apparent Weight and the Earth's Rotation01:28

    Apparent Weight and the Earth's Rotation

    Since all objects on the Earth's surface move through a circle every 24 hours, there must be a net centripetal force on each object, directed towards the center of that circle. The points of the north and south poles are the only exception to this rule.
    For an object on the Earth's equator, the net centripetal force that accounts for its rotation is the Earth's pull towards its center, or the weight minus the normal force that prevents it from piercing into the Earth's surface. This force,...
    Variation in Acceleration due to Gravity near the Earth's Surface01:20

    Variation in Acceleration due to Gravity near the Earth's Surface

    An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
    The difference between the true and apparent weights is proportional to the square of the Earth's angular speed. Since the...
    Acceleration due to Gravity on Earth00:55

    Acceleration due to Gravity on Earth

    Newton's second law is closely related to his first law of motion. It mathematically gives the cause-and-effect relationship between force and changes in motion. Newton's second law is quantitative and is used extensively to calculate what happens in situations involving a force. All external forces acting on a system add together to produce a net force Fnet. A larger net external force produces a larger acceleration. This acceleration is directly proportional to, and in the same direction as,...