Clear View Screens on Large Ships: Centripetal Acceleration Explained

What is the purpose of the circular structures in the windshields of large ships?

Purpose of Clear View Screens

The purpose of the circular structures in the windshields of large ships, also known as Clearview screens, is to disperse rain and spray. These structures consist of a glass disk that rotates at high speed, creating a centripetal acceleration to keep rain and spray from remaining on the screen.

What is the centripetal acceleration of the rim of the screen?

Calculating Centripetal Acceleration

Centripetal acceleration (a) formula: a = ω²r Where: - ω = angular speed in radians/second - r = radius in meters Given that the screen has a diameter of 0.43m (radius = 0.43m/2 = 0.215m) and rotates at 1500rpm (157 rad/s), we can calculate the centripetal acceleration: a = (157 rad/s)² x 0.215m = 5300 m/s² Therefore, the centripetal acceleration at the rim of the screen is approximately 5300 m/s².

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