The angular displacement by minute's hand of a watch after 5.0 minutes is?
回答 (2)
The minute's hand displaces a complete round (360°) in 60 minutes.
Angular displacement
= 360° × (5/60)
= 30°
= π/6 radian
Each minute of time is 360 degrees / 60 minute steps = 6 degrees.
5 minutes x 6 degrees per minute = 30 degrees.
Alternatively, 5 minutes is 1/12th of a full (360') hour rotation/
1/12 of 360 = 30 degrees.
收錄日期: 2021-05-01 13:05:23
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