Go back
Clocks...

Clocks...

Posers and Puzzles

P
Mystic Meg

tinyurl.com/3sbbwd4

Joined
27 Mar 03
Moves
17242
Clock
25 Apr 03
Vote Up
Vote Down

Time
Hour Hand in degrees.
Minute Hand in degrees.
Second Hand in degrees.

12:22:42
H 11
M 132
S 252

12:42:27
H 21
M 252
S 162

1:26:46
H 43
M 156
S 276

1:27:47
H 43.5
M 162
S 282

1:48:28
H 54
M 288
S 168

2:32:52
H 76
M 192
S 312

2:33:53
H 114.54
M 198
S 318

2:54:32
H 87
M 324
S 192

2:54:34
H 82.5
M 270
S 204

3:38:58
H 109
M 228
S 348

As long as the minute and seconds hands are 120 appart, the hour hand NEVER falls between them. Midnight is the only answer where it works. Prove me wrong, but it won't work.
😠😉

richjohnson
TANSTAAFL

Walking on sunshine

Joined
28 Jun 01
Moves
63101
Clock
25 Apr 03
1 edit
Vote Up
Vote Down

Originally posted by Phlabibit
Time
Hour Hand in degrees.
Minute Hand in degrees.
Second Hand in degrees.

12:22:42
H 11
M 132
S 252

en them. Midnight is the only answer where it works. Prove me wrong, but it won't work.
😠😉
What rules of motion have you ascribed to the hour hand?

P
Mystic Meg

tinyurl.com/3sbbwd4

Joined
27 Mar 03
Moves
17242
Clock
25 Apr 03
Vote Up
Vote Down

Originally posted by richjohnson
What rules of motion have you ascribed to the hour hand?
30 degrees per hour...
.5 per minute

didn't bother with seconds....

I am still wondering when the Minute Hand is 120 degs from Hour Hand... so there must be an answer... I'm still thinking about this.

ZB
Living But Weak

Stockport

Joined
30 Apr 03
Moves
18050
Clock
08 May 03
Vote Up
Vote Down

If the clock is completely analog then it never works. Each hour there are two times when the hour hand and minute hand are 120 degrees apart, these are (note seconds are show to 2decimal places)
00:21:49.09
00:43:38.18
01:27:16.36
01:49:05.45
02:32:43.64
02:54:32.73
03:38:10.91
04:00:00.00

Unfortunately at these exact time the second hand is not 120 degrees away from both.

If instead we deal with a discrete clock, ie one where the hands can only exist in one of the 60 positions, and assuming that the minute hand doesn't move until the second hand moves from 59 to 00 and the hour hand moves only as the minute hand moves each 12th time then the following times fullfill the criteria

00:21:41
00:43:23
01:27:47
01:49:29
02:12:31
02:43:23
03:17:37
03:59:39

Any questions? :-)

r
CHAOS GHOST!!!

Elsewhere

Joined
29 Nov 02
Moves
17317
Clock
08 May 03
Vote Up
Vote Down

'Tis not quite correct.

belgianfreak
stitching you up

Joined
08 Apr 02
Moves
7146
Clock
09 May 03
Vote Up
Vote Down

16h40. This has to be the answer because due to the innatly evil nature of the universe, and the fact that fate likes to have a laugh at our expense.
It would stop at a time that so that if I looked at it in the early afternoon I would be given that brief jolt of joy that I could go home soon until I remembered that the clock was broken & I really had 4 hours to go. Likewise it has to be close to 5pm but not quite so that if I glance at it when it really is past 5 I don't realise and work too long.

Forget maths, just remember that fate is out to get you.

r
CHAOS GHOST!!!

Elsewhere

Joined
29 Nov 02
Moves
17317
Clock
09 May 03
Vote Up
Vote Down

Thank you for that remarkable assessment. All my clocks are stopped, so I can be guaranteed accuracy twice a day.

P

Joined
22 May 03
Moves
207
Clock
28 May 03
Vote Up
Vote Down

2:20

Cookies help us deliver our Services. By using our Services or clicking I agree, you agree to our use of cookies. Learn More.