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Related Concept Videos

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.
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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.
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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.
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Related Experiment Video

Updated: May 16, 2026

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology
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[Spatial orientation under microgravity].

Izumi Koizuka1

  • 1Department of Otolaryngology, St. Marianna University School of Medicine.

Rinsho Shinkeigaku = Clinical Neurology
|December 1, 2012
PubMed
Summary
This summary is machine-generated.

Humans sense gravity via otolith organs. In microgravity, these organs adapt, reinterpreting signals, which alters spatial orientation perception upon returning to Earth.

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Area of Science:

  • Neuroscience
  • Vestibular System

Context:

  • Humans rely on otolith organs to sense gravity and motion on Earth.
  • These organs detect head orientation and linear/centripetal acceleration.

Purpose:

  • To describe the formulation of spatial orientation mechanisms.
  • To explain how these mechanisms function on Earth versus in microgravity.

Summary:

  • On Earth, otolith organs detect gravity, influencing perceived body tilt (somatogravic illusion).
  • In microgravity, otolith organs respond to linear acceleration but not static tilt.
  • Space adaptation may involve reinterpreting otolith signals, altering orientation perception upon return.

Impact:

  • Understanding vestibular system adaptation is crucial for space travel.
  • This research informs strategies to mitigate disorientation and motion sickness in astronauts.