Name the forces exist in the universe and derive their expressions in

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Name the forces exist in the universe and derive their expressions in brief.

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The forces that exist in nature are as follows

1) Electrostatic force

 They can be both repulsive as well as attractive, it can derived from Coulomb's law

F  α  Q1 Q2F α 1r2F=14πε0Q1Q2r2     ( k=14πε0)

2) Gravitational force-this force is only attractive in natureForce is directly proportional to product of the massesF α m1 m2F α 1r2F=G m1m2r2G=6.67×10-34 N m2/kg2

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