iran-konkur 2023 Q51

iran-konkur · Other · konkur-riazi_1402_tir_specialized Forces, equilibrium and resultants

51 -- A body with mass $5\,\text{kg}$ is placed on a horizontal surface and the coefficients of static and kinetic friction between the body and the surface are $0.5$ and $0.4$ respectively. If we apply a horizontal force of $26\,\text{N}$ to the body, find the acceleration of the body and the force the body exerts on the surface in SI units. $\left(g = 10\,\dfrac{\text{m}}{\text{s}^2}\right)$

[(1)] $10\sqrt{29}$ and $0.2$
[(2)] $25\sqrt{5}$ and $0.2$
[(3)] $10\sqrt{29}$ and $1.2$
[(4)] $25\sqrt{5}$ and $1.2$

\textbf{51 --} A body with mass $5\,\text{kg}$ is placed on a horizontal surface and the coefficients of static and kinetic friction between the body and the surface are $0.5$ and $0.4$ respectively. If we apply a horizontal force of $26\,\text{N}$ to the body, find the acceleration of the body and the force the body exerts on the surface in SI units. $\left(g = 10\,\dfrac{\text{m}}{\text{s}^2}\right)$

\begin{itemize}
    \item[(1)] $10\sqrt{29}$ and $0.2$
    \item[(2)] $25\sqrt{5}$ and $0.2$
    \item[(3)] $10\sqrt{29}$ and $1.2$
    \item[(4)] $25\sqrt{5}$ and $1.2$
\end{itemize}

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