Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

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...
Impact: Problem Solving01:26

Impact: Problem Solving

In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
Free-falling Bodies: Example01:05

Free-falling Bodies: Example

An object falling without any air resistance under the influence of gravitational force is said to be in free-fall. For free-falling bodies, the acceleration due to gravity is constant, irrespective of their mass. Free-fall is experienced not only by objects falling downward, but also by all objects whose motion is influenced by gravitational force alone. The dynamics of free-fall motion can be calculated using kinematic equations of motion, since free-fall acceleration is constant.
The...
Free-falling Bodies: Introduction01:07

Free-falling Bodies: Introduction

All objects, neglecting air resistance, fall with the same acceleration towards the Earth's center due to the force exerted by the Earth's gravity. This experimentally determined fact is unexpected because we are so accustomed to the effects of air resistance and friction that we expect light objects to fall slower than heavier ones. People believed that a heavier object had a greater acceleration when falling until Galileo Galilei (1564–1642) proved otherwise. We now know this is not the case.
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,...
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...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Recovery from severe adriamycin-induced cardiomyopathy after prolonged intensive care in a patient with uterine leiomyosarcoma: A case report.

Experimental and therapeutic medicine·2026
Same author

Impact of prior PARP inhibitor exposure on the efficacy of platinum-based chemotherapy in platinum-sensitive recurrent ovarian cancer: a propensity score-matched analysis.

International journal of clinical oncology·2026
Same author

Severe Lymphorrhea Mimicking Hypovolemic Shock Following Retroperitoneal Lymphadenectomy for Endometrial Cancer: A Case Report.

The journal of obstetrics and gynaecology research·2026
Same author

Effectiveness of neoadjuvant chemotherapy with lenvatinib plus pembrolizumab in advanced endometrial cancer: a case report.

Journal of medical case reports·2026
Same author

Efficacy of lenvatinib plus pembrolizumab for recurrent endometrial cancer: a focus on the nonendometrioid histology including carcinosarcoma.

Japanese journal of clinical oncology·2026
Same author

Combined Intraperitoneal and Systemic Chemotherapy for Peritoneal Metastases: Drug Delivery Concepts, Pharmacokinetics, and Clinical Applications: A Narrative Review.

Pharmaceutics·2026

関連する実験動画

Updated: Jun 28, 2026

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

極端な地面運動におけるトランポリン効果.

Shin Aoi1, Takashi Kunugi, Hiroyuki Fujiwara

  • 1National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan. aoi@bosai.go.jp

Science (New York, N.Y.)
|November 1, 2008
PubMed
まとめ

強い地震の地面運動は,水平力を大幅に上回る極端な垂直加速を持つことができます. 新しい反発質量モデルは,この非対称性を説明し,地震の危険性評価を改善します.

科学分野:

  • 地質物理学 地質物理学とは地質物理学です.
  • 地震工学は,地震工学である.
  • 地震学 地震学とは

背景:

  • 伝統的な地震の危険性評価は,主に水平の地面運動に焦点を当てています.
  • 最近の地震事件は,垂直地面加速の大きな影響を強調しています.

研究 の 目的:

  • 2008年の岩手・宮城地震で記録された前例のない垂直表面加速を調査するために.
  • 地面の垂直運動における観測された非対称性を説明するモデルを開発する.

主な方法:

  • 2008年の岩手・宮城地震 (Mw 6.9) の地上運動記録の分析
  • 地面の垂直運動をシミュレートするために,簡素化された物理モデル (トランポリンで反転する質量) の開発.

主要な成果:

  • 記録された垂直加速は重力の4倍近くに達し,水平加速を上回った.
  • 垂直加速における観測された非対称性 (上向きの振幅は下向きの1.6倍) は,既存の土壌反応モデルによって説明できませんでした.
  • 跳ね返る質量モデルは,大きな振幅と非対称性をうまく説明しています.

結論:

  • この研究は,以前は認識されていなかった,顕著で非対称な垂直加速によって特徴づけられる,強い地面運動のモードを特定した.

さらに関連する動画

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

関連する実験動画

Last Updated: Jun 28, 2026

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

  • この発見は,発生源近くの地震の危険性評価方法論の進歩を必要とします.
  • 提案されたモデルは,地震中の極端な垂直地面運動を理解し予測するための新しい視点を提供しています.