Planetary Motion – Hub of related Posts

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Here goes out posts on Planetary Motion and related topics and subtopics.

Satellite & Circular Motion & understanding of Geostationary Satellite

We will discuss here the circular motion of satellites, state of free fall of satellites, types of orbits, geostationary satellite and low Earth orbit satellites. Satellites undergo circular motion Satellites orbiting the Earth, including the Moon, are examples of objects ...
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Leaving Certificate – Numerical Worksheet on Gravity & Gravitational force & Universal Law of gravitation

This post presents a Leaving Cert Physics Gravity worksheet with Numerical Problems & solutions. You can take it as Leaving Certificate Universal Law of gravitation worksheet as well. You can browse through our post on the derivation of the law ...
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Gravitational potential energy – concepts & equations when reference varies from the planet’s surface to infinity

Gravitational potential energy, Ep, is the energy of a mass due to its position within a gravitational field. This energy can be released (and converted into kinetic energy) when the body is allowed to fall.In this post, let's find out ...
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How to measure universal gravitational constant | Measurement of G

Henry Cavendish first measured the universal gravitational constant G in 1798. The apparatus used is shown in Figure 1. Other experimenters repeated Cavendish’s measurement of G with various improvements and refinements. All measurements of G are found to be difficult ...
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Gravitational Field Strength on the earth’s surface

Gravitational Field Strength on the earth's surface is defined as the force per unit mass experienced by a small test mass placed on the earth's surface (in the gravitational field of the earth). So the Gravitational Field Strength at this ...
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Gravitational field strength formula and definition

A gravitational field is a region where you find gravity. More precisely, the gravitational field is defined as a region of space where a mass experiences a force because of its mass. In this post, we will find out more ...
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How to calculate the time the earth takes to go around the sun, using Newton’s Universal Law of Gravitation?

Here we will see how to calculate the time the Earth takes to go around the Sun once. We will use Newton's Universal Law of Gravitation to calculate this. Calculating the time taken by the earth to go around the ...
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Acceleration due to gravity of a body is independent of its mass-How to Show mathematically?

Acceleration due to gravity of a body is independent of its mass - let's show it mathematically. We will consider a body of mass m on the surface of the earth. Let M be the mass of the earth and ...
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Numerical problems on Gravitation & Gravitational force for IGCSE, ICSE, CBSE

Here we will solve a bunch of numerical problems from the Gravitation chapter of high school Physics, covering gravitational force and gravitational constant. This is a well crafted numerical problem worksheet that you should try. The solutions of the numerical ...
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How Strong is the Coulomb Force Relative to the Gravitational Force?

How Strong is the Electrostatic or Coulomb Force Relative to the Gravitational Force? To find this we will calculate the electrostatic force and the gravitational force between an electron and proton separated by 0.530×10-10 m. (This distance is their average ...
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Find out the value of g from its formula

We have derived the equation of g (acceleration due to gravity) and we will use that formula or equation to find out its value. The formula we will use is: g = GM/R2[Derivation of g formula here] Value of g ...
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The relation between G and g with equation

This post highlights the relation between G and g. G is the universal gravitational constant and g is the acceleration due to gravity. So let's find out the relationship in terms of an expression or equation. Relation between G and ...
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Calculate the acceleration due to gravity near the surface of the moon | solving numerical with this value

To calculate the acceleration due to gravity near the surface of the moon we will use the formula g = GMmoon / Rmoon2 Here G = universal gravitational constant = 6.67 × 10−11 N · m2/kg2Mmoon = 7.35 × 1022 ...
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How to compare Electric Force and Gravity with similarities and differences?

This topic is a comparative study between the Electric force and Gravity. The electric force is related to electric charges and Gravity is applicable between any two masses. Similarities between the laws explaining Electric Force and Gravity Coulomb’s law for ...
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What is the value of acceleration due to gravity at the center of the earth?

What is the value of acceleration due to gravity at the center of the earth?The value of the acceleration due to gravity at the center of the earth equals zero.Mathematical Proof of the same:At the center of the earth, depth from ...
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The formula for acceleration due to gravity at a depth h – with derivation

In this post, we will discuss and derive the formula for acceleration due to gravity at a depth h. As the depth from the earth's surface is increased, the value of g falls. We will discuss and derive the equation ...
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The formula for acceleration due to gravity at height h – with derivation

In this post, we will discuss and derive the formula for acceleration due to gravity at height h. As height or altitude from the earth's surface increases the value of g falls. Now we are to discuss and derive the ...
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Derive the formula of Acceleration due to gravity on the earth’s surface | derive the formula for g

In this post, we will list down and derive the formula of Acceleration due to gravity on the earth's surface. In other words, we will derive the formula or equation of g on the earth's surface.The 2 formulas we will ...
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Online physics calculator to calculate variation of g due to height

Use this online physics calculator to calculate the variation of g due to height or altitude variation above the earth's surface. How to use this online calculator? Enter the value of height in meter.The values are g and the radius ...
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Online physics calculator to calculate variation of g due to depth below surface

Use this online physics calculator to calculate variation of g due to depth variation below the earth's surface. How to use this calculator online? Enter the value of depth in meter unit.The values are g and the radius of the ...
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Orbital Velocity Formula with solved numerical problem

Here in this post, we will list down different forms of the Orbital velocity formula or equation. We will present here 3 sets of formula including the near-orbit one. After this, we will also see how to use these formulas ...
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Escape velocity Derivation & concept – derive formula √(2gR) for earth

We will first understand what escape velocity is and then we will focus on the escape velocity derivation to get its formula or equation. Now, what is escape velocity? Define Escape Velocity Escape velocity is defined as the minimum velocity ...
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Kepler’s Third Law equation derivation-Time period of Satellite revolution

We will derive the equation for Kepler’s Third Law using the concept of Period of Revolution and the equation of orbital velocity. In this process, the equation of Time Period Of Revolution of earth satellite would be derived as well ...
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Orbital Velocity derivation & concepts for class 11 | How to derive the orbital velocity equation?

In this post, we will focus on the Orbital Velocity derivation to come up with orbital velocity formula sets (covering class 11 syllabus). This derivation is equally applicable to the planets revolving around the Sun in their orbits and the ...
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Variation of g with height and depth – how g changes with height and depth

Variation of g with height and depth: Acceleration due to gravity or g varies as the height or depth of location changes with respect to the surface of the earth. This means the value of g on top of a ...
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A stone falls towards the earth but the opposite is not observed-why?

A stone falls towards the earth - why? A stone falls back on the ground. But the earth doesn't seem to move towards it. Why? As said by this law of universal gravitation every object in this universe is attracting ...
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Universal Law of Gravitation & Derivation of Gravitational Force formula

The objective of this post is the study of the Universal Law of Gravitation and derivation of Gravitational Force formula from the Universal Law of Gravitation. Universal Law Gravitation by Newton states about a force of attraction between any two ...
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