Fuerza
Calcula la fuerza neta con F = ma. Despeja masa o aceleración en newtons y revisa cada paso de la fórmula.
Fórmula principal
F = ma
How do you calculate force?
Net force is F = m × a. Multiply mass (kg) by acceleration (m/s²) to get newtons. Rearrange to a = F/m or m = F/a. Weight near Earth is W = mg, a special case with a = g.
Sobre esta herramienta
Con la segunda ley de Newton (F = ma) puedes relacionar masa y aceleración con la fuerza neta. La página guía entradas, unidades y pasos para problemas típicos de dinámica.
Cómo usar esta calculadora
- Elige la variable que quieres despejar y confirma qué valores ya conoces.
- Introduce los datos en unidades coherentes antes de calcular.
- Comprueba si el resultado es físicamente razonable comparándolo con las entradas.
- Usa el desglose paso a paso para ver cómo se aplicó la fórmula.
Ejemplos resueltos
Example 1: 4.0 kg at 2.5 m/s²
F = m a = (4.0)(2.5) = 10 N in the direction of the acceleration.
Example 2: find acceleration
F = 36 N, m = 6.0 kg. a = F/m = 36/6.0 = 6.0 m/s².
Example 3: find mass
F = 24 N, a = 3.0 m/s². m = F/a = 24/3.0 = 8.0 kg.
Preguntas frecuentes
What is the force formula?
Newton’s second law: F = m a. Mass in kg, acceleration in m/s², force in newtons. Rearrangements are a = F/m and m = F/a.
Is F the applied force or the net force?
F in F = ma is the net force — the vector sum of all forces on the object. Friction, tension, and gravity must be included before you apply F = ma.
What is the difference between mass and weight?
Mass (kg) measures inertia. Weight (N) is the gravitational force W = mg. Do not put weight in newtons into the m slot of F = ma.
How does F = ma relate to centripetal force?
For circular motion, a = v²/r toward the centre, so F = m(v²/r) = mv²/r. Use the centripetal force calculator when the path is a circle.
How does force relate to momentum and work?
Impulse J = FΔt equals Δp. Work W = Fd transfers energy when force acts through a displacement. Use the momentum and work calculators for those forms.