In particular, Newton determined that the acceleration of the Moon around the Earth could be ascribed to the same force of gravity if the acceleration due to gravity decreased as an inverse square law. Saitta, A.

Balance or synergies between environment and economy a note on model structures. Published 07 May A mechanochromic smart material.

Nature Research menu. The two people could be pulling against each other as in tug of war or the two people could be pulling in the same direction. Tension forces can be modeled using ideal strings that are massless, frictionless, unbreakable, and unstretchable.