Central force is a force whose line of action for any position of the body to which it is applied passes through a point called the center of force.
Characteristics:
1) for any central force where is the force moment.
2) The work of the central force along a closed circuit is 0.
3) For any central force
Examples:
1) Coulomb's force:
2) the gravitational force:
3) Harmonic oscillator:
4) Uniform circular motion:
5) uniformly accelerated motion:
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