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algol [13]
3 years ago
13

The acceleration due to grauity at

Physics
1 answer:
Andrew [12]3 years ago
6 0

Answer:

La gravedad de la Tierra, denotada por {\displaystyle g}g, es la aceleración neta que se imparte a los objetos debido al efecto combinado de la gravitación (de la distribución de la masa dentro de la Tierra) y la fuerza centrífuga (de la rotación de la Tierra).2​3​

En unidades SI, esta aceleración se mide en metros por segundo al cuadrado (en símbolos, m/s2 o m·s−2) o de manera equivalente en newtons por kilogramo (N / kg o N · kg−1). Cerca de la superficie de la Tierra, la aceleración gravitacional es de aproximadamente 9.81 m/s2, lo que significa que, ignorando los efectos de la resistencia del aire, la velocidad de un objeto que cae libremente aumentará en aproximadamente 9.81 metros por segundo cada segundo. Esta cantidad a veces se conoce informalmente como pequeña {\displaystyle g}g (en contraste, la constante gravitacional {\displaystyle G}G se denomina gran {\displaystyle G}G).

La fuerza precisa de la gravedad de la Tierra varía según la ubicación. El valor "promedio" nominal en la superficie de la Tierra, conocido como gravedad estándar es, por definición, 9.80665 m/s2. Esta cantidad se denota de diversas maneras como {\displaystyle g_{n}}{\displaystyle g_{n}}, {\displaystyle g_{e}}{\displaystyle g_{e}} (aunque esto a veces significa el valor ecuatorial normal en la Tierra, 9.78033 m/s2), {\displaystyle g_{0}}g_{0} o simplemente {\displaystyle g}g (que también se usa para el valor local variable).

El peso de un objeto en la superficie de la Tierra es la fuerza hacia abajo sobre ese objeto, dada por la segunda ley de movimiento de Newton, o {\displaystyle F=ma}{\displaystyle F=ma} (fuerza = masa × aceleración). La aceleración gravitacional contribuye a la aceleración de la gravedad total, pero otros factores, como la rotación de la Tierra, también contribuyen y, por lo tanto, afectan el peso del objeto. La gravedad normalmente no incluye la atracción gravitacional de la Luna y el Sol, que se explican en términos de efectos de marea. Es una cantidad vectorial (física), cuya dirección coincide con una plomada.

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