Gravitationskonstanten
Den allmänna gravitationskonstanten brukar betecknas med G och ingår främst i Newtons gravitationslag. G är en universalkonstant vars numeriska värde är 6,67430(15)·10−11 m3 kg-1s-2.[1]
Gravitationskonstanten ska inte förväxlas med tyngdaccelerationen på jordens yta, vilken i Sverige är ungefär 9,82 m/s².[2][3]
Se även
Referenser
- ^ ”Newtonian constant of gravitation”. 2018 CODATA recommended values. NIST. https://physics.nist.gov/cgi-bin/cuu/Value?bg. Läst 11 april 2023.
- ^ ”Tyngd - Naturvetenskap.org”. www.naturvetenskap.org. http://www.naturvetenskap.org/fysik/gymnasiefysik/kraft/tyngd/. Läst 2 januari 2016.
- ^ ”Tyngdkraften”. www.lantmateriet.se. Lantmäteriet. https://www.lantmateriet.se/sv/geodata/gps-geodesi-och-swepos/Referenssystem/Tyngdkraftssystem/Tyngdkraften/. Läst 11 april 2023.
Media som används på denna webbplats
Cavendish Torsion Balance Diagram.svg
Diagram of torsion balance used in the Cavendish experiment performed by Henry Cavendish in 1798. It measured the force of gravity between masses M and m, yielding the value of the gravitational constant G. Labels: (M) mass of stationary lead balls, (m) mass of movable lead balls, (F) gravitational force between each pair of balls, () angle of deflection of balance from equilibrium position, (K) torsion spring coefficient, (r) distance between centers of balls when balance is deflected (L) length of balance beam between centers of small balls.
Diagram of torsion balance used in the Cavendish experiment performed by Henry Cavendish in 1798. It measured the force of gravity between masses M and m, yielding the value of the gravitational constant G. Labels: (M) mass of stationary lead balls, (m) mass of movable lead balls, (F) gravitational force between each pair of balls, () angle of deflection of balance from equilibrium position, (K) torsion spring coefficient, (r) distance between centers of balls when balance is deflected (L) length of balance beam between centers of small balls.
