Question on circular motion, finding out the angular displacement in a clock.

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mutineer123
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Homework Statement


A clock is showing 3.30. Calculate the angular displacement in degrees from the 12.00 position of the clock to:
i the minute hand
ii the hour hand

I got my minute answer as 180 degree, which is right. But my second answer was 90 degrees, which apparently is wrong! the answer theyr giving is 105 degrees! how come? even just looking at the hour hand, we can see that the angular displacement should be 90 degrees! they did something like 3.5/12 X 360 degrees.


Homework Equations





The Attempt at a Solution

 

Discussion

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When the clock reads 3:30, is the hour hand pointing directly at 3 or is it somewhere between 3 and 4?
 
Jimmy said:
When the clock reads 3:30, is the hour hand pointing directly at 3 or is it somewhere between 3 and 4?

holy crap, u are right. Its btween 3 and 4...I totally overlooked that!
 
It's a bit of a trick question. My first reaction was that the answer is wrong until I thought about it for a few seconds.