iran-konkur 2023 Q52

iran-konkur · Other · konkur-riazi_1402_tir_specialized Circular Motion 1 Flat Curve with Friction (Unbanked Road)
52 -- A car with mass $2\,\text{t}$ moves on a horizontal surface at a constant speed of $18\,\dfrac{\text{km}}{\text{h}}$ along a circular path with radius $20\,\text{m}$. How many Newtons is the centripetal force and which force provides it?
  • [(1)] $2500$ -- kinetic friction force
  • [(2)] $2500$ -- static friction force
  • [(3)] $1250$ -- kinetic friction force
  • [(4)] $1250$ -- static friction force
\textbf{52 --} A car with mass $2\,\text{t}$ moves on a horizontal surface at a constant speed of $18\,\dfrac{\text{km}}{\text{h}}$ along a circular path with radius $20\,\text{m}$. How many Newtons is the centripetal force and which force provides it?

\begin{itemize}
    \item[(1)] $2500$ -- kinetic friction force
    \item[(2)] $2500$ -- static friction force
    \item[(3)] $1250$ -- kinetic friction force
    \item[(4)] $1250$ -- static friction force
\end{itemize}