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Physics 21 Online
OpenStudy (anonymous):

Hey guys..anybody knows what is the main reason that produces force?

OpenStudy (anonymous):

(THE UNIVERSE STARTS FROM NONE.) ENERGY PRODUCE FORCE, AND FORCE CONVERSE BK TO ENERGY.

OpenStudy (anonymous):

does that mean force and energy are same........is there any theory about this?

OpenStudy (mani_jha):

Forces are of several kinds. But the majority of the forces in our world are electromagnetic forces. They are produced due to attractions and repulsions between the nuclei and electrons of the atoms close to each other between the interacting bodies.

OpenStudy (anonymous):

What about gravitational?

OpenStudy (mani_jha):

Newton in his time considered gravity as a force. But noone could explain the cause of gravitation until Einstein. Eienstein said that gravity is not a force at all, but a curvature in space-time caused due to mass. This is an advanced concept. You can read up on this, ig you're interested.

OpenStudy (anonymous):

Does that mean there is no attraction between earth and me?

OpenStudy (mani_jha):

Of course, there is. That's why you can stand on the earth. But Eienstein just states a different reason for that.

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