Question

An aircraft executes a horizontal loop of the radius $1 \, km$ with a steady speed of $900 \, km \, h^{- 1}$ . Find the ratio of its centripetal acceleration with the acceleration due to gravity?

• A. $3.2$
• B. $6.4$
• C. $1.8$
• D. $7.9$

Answer 1

Answer: (B)

$\textit{a}=\frac{\textit{v}^{2}}{\textit{r}}=\frac{2 5 0^{2}}{1 0 0 0}=\text{62.5 m s}^{- 2}$ ,
$\frac{\textit{a}}{\textit{g}}=\frac{62 . 5}{9 . 8}=\text{6.4}$