SOLUTION: How big is the clock has to be for the tip of the second hand at 100miles/hour? in a tip of the minute hand at 100miles/hour? in a tip of the hour hand at 100miles/hour? (

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Question 515805: How big is the clock has to be for the tip of the second hand at 100miles/hour?
in a tip of the minute hand at 100miles/hour?
in a tip of the hour hand at 100miles/hour?
(the three of them in diameter or circumference).
How fast the sun is moving in mile/hour? what would be the speed of the sun?
Found 2 solutions by Edwin McCravy, Alan3354:
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
The formula is 

vT = rw

or
     vT 
r = ———
     w

The angular velocity w of the second hand is 

60%28revolutions%29%2F%28hour%29

Each revolution is 2p radians.

So 60%28revolutions%29%2F%28hour%29 = 60%2A2piradians%2F%28hour%29 = 120piradians%2F%28hour%29 
 
     vT 
r = ———
     w

     100miles%2Fhour
r = ———————————— 
     120piradians%2F%28hour%29 


r = 100%2F%28120pi%29miles = 100%2F%28120pi%29%22%D7%225280feet = 1400.5635 feet.

That's the length the second hand would have to be for the tip of it
to be traveling 100 mi/hr.   That's the only one I'll do for now.

Edwin

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The other tutor did the second.
The minute hand would have to be 60 times the length of the second hand, and
the hour hand would have to be 3600 times the length of the second hand.
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The Sun is moving 12 miles/second around the center of the Milky Way.