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Seconds, anyone? (Posted on 2011-10-03) Difficulty: 1 of 5
How many angular seconds(") covers a seconds hand of an analog watch in one second (sec)?

See The Solution Submitted by Ady TZIDON    
Rating: 5.0000 (1 votes)

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Solution answer | Comment 1 of 2

The second hand travels 1/60 of the circular watch face in one second. A circle is 360 degrees, therefore the second hand travels 6 degrees in one second.

There are 60 arcminutes in 1 degree and 60 arcseconds in 1 arcminute, therefore there are 21600 arcseconds (angular seconds) in one second covered by the second hand of the analog watch.

 

 


  Posted by Dej Mar on 2011-10-03 11:02:29
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