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Explain the various fundamental forces in nature ?

There are four universal or fundamental forces in nature. Without these forces, all matter in the world will fall apart. Force as such is any pull or push that causes an object to alter its physical state (in terms of motion or deformity). Newton defined a force as anything that causes an object of mass ‘m’ to move with an acceleration ‘a’. 
They are:
Gravitational Force
Electromagnetic force
Strong Nuclear Forces
Weak Nuclear Forces


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