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Watch this:

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FIELDS - REVISION OF GRAVITATIONAL VS ELECTROSTATIC FIELDS

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GRAVITATIONAL FIELDS

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ELECTROSTATIC FIELDS

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ELECTROSTATIC VS GRAVITATIONAL FIELDS IN ACTION - BUILD YOUR OWN PARTICLE ACCELERATOR!  

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ELECTROSTATIC VS GRAVITATIONAL FIELDS IN ACTION - BUILD YOUR OWN PARTICLE ACCELERATOR!  

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Newton's Law of Universal Gravitation states:

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Newton's Law of Universal Gravitation states:

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Every particle with mass in the universe attracts every other particle with a
force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.

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Two point charges in free space or air exert forces on each other. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between the charges.

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Watch the video below.

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THE STORY OF GRAVITY STARTS WITH THESE SCIENTIFIC GIANTS

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THE STORY OF GRAVITY STARTS WITH THESE SCIENTIFIC GIANTS

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Copernicus, Galileo, Kepler, Newton, Einstein.

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Galileo’s experiment on the moon in 1971 - feather hammer drop 

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Galileo’s experiment on the moon in 1971 - feather hammer drop 

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In a nutshell

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Newtons Universal Law of Gravitation - Science in a Minute

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WHERE:
F = force
m = mass
r = distance two objects are apart (distance between their centers)
G = Universal gravitational constant (Newton's constant) = 6.673×10⁻¹¹ N m² kg-2

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Performed in 1797–98 by British scientist Henry Cavendish

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Does Gravity Have A Value Gravity And Me Spark

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Easily create beautiful interactive video lessons for your students you can integrate right into your LMS. Track students' progress with hassle-free analytics as you flip your classroom!

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Superman's strength must be partly attributed to the gravitational field of his home planet, Krypton.

The people of Krypton evolved to stand, walk, and lift ordinary objects in Krypton's strong gravitational field.

When Superman came to Earth, he found that his Kryptonian physique was sort of over-designed.

He could "leap over tall buildings in a single bound", for example. Let's see Superman in action:

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Superman (1978) - West Coast Chaos Scene (810) Movieclips

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Easily create beautiful interactive video lessons for your students you can integrate right into your LMS. Track students' progress with hassle-free analytics as you flip your classroom!

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SIMPLE PROBLEM SOLVING ON UNIVERSAL GRAVITATION

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SIMPLE PROBLEM SOLVING ON UNIVERSAL GRAVITATION

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NEWTON'S LAW OF UNIVERSAL GRAVITATION - Sample Problem - (slide 9)

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Gravity, Universal Gravitation Constant - Gravitational Force Between Earth, Moon & Sun, Physics

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PROPORTIONALITY IN THE UNIVERSAL GRAVITATION EQUATION

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PROPORTIONALITY IN THE UNIVERSAL GRAVITATION EQUATION

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Observe how the force of gravity is directly proportional to the product of the two masses and inversely proportional to the square of the distance of separation.

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Famous Ball-and-Feather Experiment

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Brian Cox visits the world's biggest vacuum | Human Universe - BBC

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Physics - Universal Gravitation (Univ of Toronto) PSSC

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He was a Dutch-American physicist, noted for his design and construction of high-voltage Van de Graaff generators.

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The principle of conservation of charge states:
The net charge of an isolated system remains constant during any physical process (e.g. two charged objects making contact and separating).

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Metals are good conductors, so charge is free to move around in and on it.

Insulators (e.g. plastic and rubber) don't allow electric charges to move through them.

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The elementary charge, usually denoted by e or sometimes q e, is the electric charge carried by a single electron.

Elementary charge = charge on a single electron = -1,6 x 10-19 C.

Robert A. Millikan's oil drop experiment first measured the size of the elementary charge in 1909.

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Electrons - Quantization of Electric Charge - Physics Video by Brightstorm

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Time-saving video on electrons and the quantization of electric charge. Electron charge is the transfer of electrons from one material to another. Quantization of charge means that when we say something has a given charge, we mean that that is how many times the charge of a single electron it has.

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PROBLEM: CHARGE ON CONDUCTING SPHERES AFTER TOUCHING AND SEPARATION

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PROBLEM: CHARGE ON CONDUCTING SPHERES AFTER TOUCHING AND SEPARATION

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POLARIZED WATER STREAM INTERACTS WITH CHARGED OBJECTS 

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POLARIZED WATER STREAM INTERACTS WITH CHARGED OBJECTS 

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ELECTROSTATIC FORCE FALLS OFF WITH DISTANCE 

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ELECTROSTATIC FORCE FALLS OFF WITH DISTANCE 

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Dependence of force on distance between charged objects

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The following three charges with distances apart are given:

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Solution:

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Calculate the net force on the red charge.