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All particle in nature is subjected to four fundamental forces Strong nuclear force Weak nuclear force Electromagnetic force Gravitational force

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STRONG FORCE
binds the nucleus of an atom

Strong nuclear force : The strong force is responsible for binding of neutron and protons in the nuclei. It is responsible for stability of matter. It is the strongest of all fundamental forces. The strong force is very short range force and is negligible for separation greater than 10-14m. The force represents the  glue  that hold the nucleons together.

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Weak nuclear force : The weak nuclear force act inside the nucleons. The weak force is a short  range force , even shorter that strong force . It allow proton to turn into neutrons , and is responsible for radioactive decay . It is very important in nuclear fusion that happens in Sun . It is 10-9 times of strong nuclear force.

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Electromagnetic force : It is responsible for binding of atoms and molecules . It is a long range force that decreases in strength as the inverse square of separation between charges. It is 10-2 times the strength of strong force . Mathematically ,

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Gravitational force : Gravitational force is present between two masses. The force that holds the plants , stars , and galaxies together. It is long range order force that has strength  only  10 -38  times of strong force. Mathematically,

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Strong force :    mediated by field particles called gluons. Weak force :     mediated by particles called w and z bosons. Electromagnetic force :   mediated by photons which are the quanta of electromagnetic field. Gravitational force :     mediated by quanta of gravitational field called gravitons.

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Electromagnetic Force Gravitational Force The force between two point charges which is directly proportional to product of charges and inversely proportional to square of distance between them. The force between two masses which is directly proportional to product of their masses and inversely proportional to square of distance between them. It obey inverse square law. It obey inverse square law. It may be attractive and repulsive. It is always attractive. Electromagnetic force is a strong force. Gravitational force is a weak force.

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Electromagnetic Force Gravitational Force It is short range force. It has long range order For example                  The electrical interaction between the paper pieces and the comb  For example               The force that causes the moon to move around Earth.

BASIC FORCES OF NATURE

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