Question

An aircraft executes a horizontal loop of radius 1.00 km with a steady speed of 900 km/h. Its centripetal acceleration is ______.

Options

• 0.4 m/s²

• 250 m/s²

• 62.5 m/s²

• 6.38 m/s²

Answer 1

An aircraft executes a horizontal loop of radius 1.00 km with a steady speed of 900 km/h. Its centripetal acceleration is 62.5 m/s².

Explanation:

Centripetal acceleration, a = `"v"^2/"r"`

`= ((900 " km"//"h")^2)/(1 " km") = (250  "m"//"s")^2/(1000 " m")`

∴ 90 km/h = 25 m/s

∴ a = `(250 xx 250)/1000`

= 62.5 m/s²