Related Experiment Video

Updated: Jul 12, 2026

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
12:29

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions

Published on: May 23, 2011

Pilot performance is increased after alternating hypo- and hypergravity states

J Sýkora, I Solcová, O Pelcák

    The Physiologist
    |February 1, 1989
    PubMed

    More Related Videos

    Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology13:59

    Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology

    Published on: November 13, 2014

    Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats05:54

    Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats

    Published on: April 4, 2019

    Related Concept Videos

    Weightlessness01:01

    Weightlessness

    When an object is dropped, it accelerates toward the center of the Earth. If the net external force on the object is its weight, it is said to be in free fall; that is, the only force acting on the object is gravity. Galileo was instrumental in showing that, in the absence of air resistance, all objects fall with the same acceleration g. However, when objects on the Earth fall downward, they are never truly in free fall, because there is always some upward resistance force from the air acting...
    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...
    Acceleration due to Gravity on Other Planets01:24

    Acceleration due to Gravity on Other Planets

    The gravitational acceleration of an object near the Earth's surface is called the acceleration due to gravity. It can be measured by conducting simple experiments on Earth. However, such an experiment is impossible to conduct on the surface of other planets.
    Astronomical observations are thus used to measure the acceleration due to gravity on other planets. This can be determined by observing the effect of a planet's gravity on objects close to it. The crucial factor that helps in this...
    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...
    Principle of Equivalence01:18

    Principle of Equivalence

    According to Albert Einstein (1897-1955), free-falling and feeling weightless are intrinsically linked. If a person were in free-fall under gravity, for example, diving towards the Earth from an airplane, they would feel completely weightless. Similarly, a person descending in a lift may feel partially weightless. Broadly speaking, it is assumed that an object in a uniform gravitational field and an object undergoing constant acceleration in the absence of gravity are under the same...
    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,...