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7. Un objeto está sometido a dos fuerzas, \( \vec{F}_{1}=0,03 \) \( N \) y \( \vec{F}_{2}=-2 \vec{i}+5 \vec{j} \mathrm{mN} \), simultáneamente. Calcula fuerza resultante que lo empuja.

Ask by Howell Peters. in Colombia
Feb 22,2025

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La fuerza resultante que empuja al objeto es \( 0,029 \vec{i} + 5 \times 10^{-3} \vec{j} \) N.

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Para calcular la fuerza resultante, primero debemos asegurarnos de que todas las fuerzas estén en las mismas unidades. Dado que \( \vec{F}_{1} = 0,03 \, N = 30 \, mN \) (donde 1 N = 1000 mN), podemos expresar ambas fuerzas en mN. Así que, \( \vec{F}_{1} = 30 \vec{i} \, mN \) y \( \vec{F}_{2} = -2 \vec{i} + 5 \vec{j} \, mN \). Ahora sumamos ambas fuerzas: \[ \vec{F}_{R} = \vec{F}_{1} + \vec{F}_{2} = (30 \vec{i} - 2 \vec{i}) + (5 \vec{j}) = 28 \vec{i} + 5 \vec{j} \, mN \] Por lo tanto, la fuerza resultante es \( \vec{F}_{R} = 28 \vec{i} + 5 \vec{j} \, mN \).

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