An aircraft executes a horizontal loop of radius 1 km with a steady speed of `900 km h^(-1)`. Compare its centripetal acceleration with the acceleration due to gravity.

Explanation

To solve the problem of comparing the centripetal acceleration of an aircraft executing a horizontal loop with the acceleration due to gravity, we can follow these steps:

### Step 1: Identify the given values
- Radius of the loop (R) = 1 km = 1000 m
- Speed of the aircraft (V) = 900 km/h

### Step 2: Convert speed from km/h to m/s
To convert the speed from kilometers per hour to meters per second, we use the conversion factor:
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