doi: 10.7392/openaccess.45011852

The purpose of this article is to identify laws that would describe gravitation if negative gravitational mass/gravitational charge (g-charge) exists. WEP is generalized to establish correlations between mass and positive/negative g-charge (Q_(g+)/Q_(g-)), although Q_(g-) on Earth would fall upward. Newton’s theory and Einstein’s theory are generalized to describe behaviors of objects carrying Q_(g-). A significant conclusion is that, as long as Q_(g-) is introduced, all of Newton’s theory, Gravitodynamics and Einstein’s theory explain the accelerated expansion of Universe equally well without needs of “negative pressure” and “cosmological constant” that has fine-tuning issue. This implies that this mechanism of the cosmological phenomenon is universal and theory independent, which strongly supports the existence of negative g-charges. Moreover the acceleration is increasing with time. Gravitodynamics and generalized Einstein’s theory predict: (1) gravitational wave (GW_-) emitted by Q_(g-); (2) GW_- cannot be distinguished from GW_+ emitted by Q_(g+).

**Keywords: **repulsive gravitation, accelerated expansion of Universe, Newton’s theory of gravity, Gravitodynamics, Einstein’s theory of gravity.

**Citation**: Peng, H. (2016). Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge. *Open Science Repository Physics*, Online(open-access), e45011852. http://doi.org/10.7392/OPENACCESS.45011852

**Received**: September 12, 2016

**Published**: September 19, 2016

**Copyright**: © 2016 Peng, H. Creative Commons Attribution 3.0 Unported License.

**Contact**: research@open-science-repository.com

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**APA**

Peng, H. (2016). Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge. *Open Science Repository Physics*, Online(open-access), e45011852. http://doi.org/10.7392/OPENACCESS.45011852

**MLA**

Peng, Hui. “Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge.” *Open Science Repository Physics* Online.open-access (2016): e45011852. Web.

**Chicago**

Peng, Hui. “Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge.” *Open Science Repository Physics* Online, no. open-access (2016): e45011852. doi:10.7392/OPENACCESS.45011852.

**Harvard**

Peng, H. (2016) ‘Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge’, *Open Science Repository Physics*. Open Science Repository, Online(open-access), p. e45011852. doi: 10.7392/OPENACCESS.45011852.

**Science**

1. H. Peng, Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge, *Open Sci. Repos. Phys.* **Online**, e45011852 (2016).

**Nature**

1. Peng, H. Generalized Einstein’s Theory, Gravitodynamics, and Generalized Newton’s Theory of Negative Gravitational Mass/Gravitational Charge.* Open Sci. Repos. Phys*. **Online**, e45011852 (2016).

Research registered in the DOI resolution system as:** **10.7392/openaccess.45011852.

This work is licensed under a Creative Commons Attribution 3.0 Unported License.