User contributions for Rongzhou

24 September 2026

• 15:1315:13, 24 September 2026 diff hist +59 Classical mechanics →Gravity: any two mass attracts current
• 15:0415:04, 24 September 2026 diff hist +91 Two body problem →Classic form: planetary/satellite orbit (point mass approximation) current
• 15:0115:01, 24 September 2026 diff hist +89 N File:Two-body-problem.ggb No edit summary current
• 15:0115:01, 24 September 2026 diff hist +111 Two-body-problem (Q1786) Created the image item for Two-body-problem current
• 15:0115:01, 24 September 2026 diff hist +1,583 Two-body-problem (Q1786) Created the image item for Two-body-problem
• 15:0115:01, 24 September 2026 diff hist +230 N Two-body-problem (Q1786) Created the image item for Two-body-problem
• 14:4114:41, 24 September 2026 diff hist +1,267 N Two body problem Created page with "In astronomy, two body problems normally refer to the study of the gravitational interaction of two celestial objects. == Classic form: planetary/satellite orbit (point mass approximation) == Approximate a star/planet as point mass $M$, and a planet/satellite orbiting around it as point mass $m$. The orbit of the planet in the reference frame of the star satisfies the equation: {{#content:Q1785}} Where $\mu=G(M+m)$. === Derivation === Let $$ \mathbf{r}=\math..."
• 14:3514:35, 24 September 2026 diff hist +177 Planetary orbit (Q1785) Added content item: Planetary orbit current
• 14:3514:35, 24 September 2026 diff hist +1,264 N Planetary orbit (Q1785) Added content item: Planetary orbit
• 13:4213:42, 24 September 2026 diff hist +2,094 N Gravitational potential energy Created page with "Gravitational potential energy, commonly noted $U$, refers to the energy incorporated in a system as a result of the gravitational attraction between its elements. == Zero reference point == Generally, we define the zero reference point: {{#content:Q1779}} Since there is no gravitational interaction when objects are at an infinite distance from each other. Then, the gravitational potential energy of a system measures the amount of work done by gravitational forces t..." current
• 13:4013:40, 24 September 2026 diff hist +177 Gravitational potential energy and gravitational potential (Q1784) Added content item: Gravitational potential energy and gravitational potential current
• 13:4013:40, 24 September 2026 diff hist +1,291 N Gravitational potential energy and gravitational potential (Q1784) Added content item: Gravitational potential energy and gravitational potential
• 13:3413:34, 24 September 2026 diff hist +178 Classical mechanics →Gravity: any two mass attracts
• 13:2213:22, 24 September 2026 diff hist +177 Gravitational potential energy of continuous mass distribution (Q1783) Added content item: Gravitational potential energy of continuous mass distribution current
• 13:2213:22, 24 September 2026 diff hist +1,371 N Gravitational potential energy of continuous mass distribution (Q1783) Added content item: Gravitational potential energy of continuous mass distribution
• 13:1213:12, 24 September 2026 diff hist +177 Gravitational potential energy between a point mass and a system of many point masses (Q1782) Added content item: Gravitational potential energy between a point mass and a system of many point masses current
• 13:1213:12, 24 September 2026 diff hist +1,346 N Gravitational potential energy between a point mass and a system of many point masses (Q1782) Added content item: Gravitational potential energy between a point mass and a system of many point masses
• 12:5912:59, 24 September 2026 diff hist +177 Gravitational potential energy between many point masses (Q1781) Added content item: Gravitational potential energy between many point masses current
• 12:5912:59, 24 September 2026 diff hist +1,312 N Gravitational potential energy between many point masses (Q1781) Added content item: Gravitational potential energy between many point masses
• 12:5412:54, 24 September 2026 diff hist +177 Gravitational potential energy between two point masses (Q1780) Added content item: Gravitational potential energy between two point masses current
• 12:5412:54, 24 September 2026 diff hist +1,269 N Gravitational potential energy between two point masses (Q1780) Added content item: Gravitational potential energy between two point masses
• 12:3712:37, 24 September 2026 diff hist +177 Zero reference point for gravitational potential energy (Q1779) Added content item: Zero reference point for gravitational potential energy current
• 12:3712:37, 24 September 2026 diff hist +1,266 N Zero reference point for gravitational potential energy (Q1779) Added content item: Zero reference point for gravitational potential energy

23 September 2026

• 12:4812:48, 23 September 2026 diff hist +576 Classical mechanics No edit summary
• 07:0607:06, 23 September 2026 diff hist +109 User:Rongzhou/Nvim Regex →Katex current
• 06:4706:47, 23 September 2026 diff hist +4,866 N Classical mechanics Created page with "Classical mechanics is one framework to the study of mechanics. == Validity == == Vector description == Concise description of mechanical systems can be provided with vectors. === Reference frame === A reference frame is defined by an origin $O$, and the three unit vectors for each dimension of space: $\overrightarrow{x}$, $\overrightarrow{y}$, and $\overrightarrow{z}$. It can be noted as: $$R(O;\overrightarrow{x},\overrightarrow{y},\overrightarrow{z})$$..."
• 06:4006:40, 23 September 2026 diff hist +177 Gravitational force between two arbitrary objects (vector notation) (Q1778) Added content item: Gravitational force between two arbitrary objects (vector notation) current
• 06:4006:40, 23 September 2026 diff hist +1,439 N Gravitational force between two arbitrary objects (vector notation) (Q1778) Added content item: Gravitational force between two arbitrary objects (vector notation)

22 September 2026

• 20:5520:55, 22 September 2026 diff hist +104 Gravitational force between two point masses (vector notation) (Q1777) Updated the item for Gravitational force between two point masses (vector notation) from Special:Update current
• 20:5120:51, 22 September 2026 diff hist +177 Gravitational force between two point masses (vector notation) (Q1777) Added content item: Gravitational force between two point masses (vector notation)
• 20:5120:51, 22 September 2026 diff hist +1,355 N Gravitational force between two point masses (vector notation) (Q1777) Added content item: Gravitational force between two point masses (vector notation)
• 20:4220:42, 22 September 2026 diff hist +344 User:Rongzhou/Nvim Regex →Markdown /md
• 19:5119:51, 22 September 2026 diff hist 0 Work and force (vector notation) (Q1773) Updated the item for Work and force (vector notation) from Special:Update current
• 19:5119:51, 22 September 2026 diff hist +7 Work and force (vector notation) (Q1773) ‎Changed claim: LaTeX source (P4): \\Delta E_k=\\int \\vec F_{ext} \\cdot d\\vec r
• 19:4919:49, 22 September 2026 diff hist +177 Work and force (vector notation) (Q1773) Added content item: Work and force (vector notation)
• 19:4919:49, 22 September 2026 diff hist +1,269 N Work and force (vector notation) (Q1773) Added content item: Work and force (vector notation)
• 19:4219:42, 22 September 2026 diff hist 0 Kinetic energy and velocity (vector notation) (Q1771) ‎Changed claim: LaTeX source (P4): E_k=\\frac{1}{2}m \\left\\| \\overrightarrow{v} \\right\\|² current
• 19:3819:38, 22 September 2026 diff hist +177 Conservation of energy (vector notation) (Q1772) Added content item: Conservation of energy (vector notation) current
• 19:3819:38, 22 September 2026 diff hist +1,245 N Conservation of energy (vector notation) (Q1772) Added content item: Conservation of energy (vector notation)
• 19:3719:37, 22 September 2026 diff hist +177 Kinetic energy and velocity (vector notation) (Q1771) Added content item: Kinetic energy and velocity (vector notation)
• 19:3719:37, 22 September 2026 diff hist +1,302 N Kinetic energy and velocity (vector notation) (Q1771) Added content item: Kinetic energy and velocity (vector notation)
• 16:4616:46, 22 September 2026 diff hist +177 impulse and force(vector notation) (Q1770) Added content item: impulse and force(vector notation) current
• 16:4616:46, 22 September 2026 diff hist +1,293 N impulse and force(vector notation) (Q1770) Added content item: impulse and force(vector notation)
• 16:4016:40, 22 September 2026 diff hist +177 Conservation of momentum (vector notation) (Q1769) Added content item: Conservation of momentum (vector notation) current
• 16:4016:40, 22 September 2026 diff hist +1,271 N Conservation of momentum (vector notation) (Q1769) Added content item: Conservation of momentum (vector notation)
• 16:3216:32, 22 September 2026 diff hist +177 Newton's 3rd law (vector notation) (Q1768) Added content item: Newton's 3rd law (vector notation) current
• 16:3216:32, 22 September 2026 diff hist +1,293 N Newton's 3rd law (vector notation) (Q1768) Added content item: Newton's 3rd law (vector notation)
• 16:2916:29, 22 September 2026 diff hist +177 Newton's 2nd law (vector notation) (Q1767) Added content item: Newton's 2nd law (vector notation) current
• 16:2916:29, 22 September 2026 diff hist +1,282 N Newton's 2nd law (vector notation) (Q1767) Added content item: Newton's 2nd law (vector notation)
• 15:3215:32, 22 September 2026 diff hist +177 Newton's 1st law (vector notation) (Q1766) Added content item: Newton's 1st law (vector notation) current