Física161 views·Updated Jun 19, 2026·1 page

Fórmulas de Trabajo, Energía y Potencia

Erika Ramírez León@erikaramrezlen

¿Sabías que cada vez que levantas tu mochila o corres...

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$- Cormulario Fuerza ma (N) (m)=kg (a)=$\\frac{m}{s^2}$ P- Peso del cuerpo en Newton = m.g (g.) =gravedad $\rightarrow$ (9.8 $\frac{m}{s^2}$

Formulario de Física: Fuerza, Trabajo y Energía

La fuerza es lo que hace que las cosas se muevan o cambien de velocidad. La fórmula básica es F = ma, donde necesitas la masa (en kg) y la aceleración $en m/s²$ . El resultado te da la fuerza en Newtons.

El peso es un tipo especial de fuerza que siempre actúa hacia abajo. Se calcula con P = mg, donde g es la gravedad $9.8 m/s²$ . Por eso pesas menos en la Luna: tiene menos gravedad que la Tierra.

El trabajo mide cuánta energía usas para mover algo. La fórmula básica es W = F·d (fuerza por distancia). Si empujas en ángulo, usas W = F cos α · d. Las unidades son Joules.

💡 Tip clave: Un Joule es la energía que usas para levantar una manzana un metro de altura.

La energía potencial (mgh) es energía "almacenada" por la posición. Una pelota en lo alto de un edificio tiene mucha energía potencial. La energía cinética (½mv²) es energía de movimiento: mientras más rápido va algo, más energía cinética tiene.

La potencia $P = W/t$ mide qué tan rápido haces trabajo. También se puede calcular como P = F·v. Un caballo de fuerza (HP) equivale a 746 watts.

Para despejar velocidad de la energía cinética: v = √ $2Ec/m$ . Para calcular altura desde velocidad: h = v²/(2g).

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