# Why are man hole covers round?

**URL:** <https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996>\
**Category:** NYSpeed Off Topic\
**Created:** [January 17, 2008, 11:49am UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996 "2008-01-17T11:49:51Z")\
**Posts on this page:** 20\
**Page:** 2

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**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\
**Post date:** [January 17, 2008, 12:08pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/21 "2008-01-17T12:08:58Z")

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these questions arent really there for you to just blurt out an answer. Anyone could study interview questions and show up and toss them around. They want to see how analytical you are. They want you to sit there and analyze a problem in your head and come up with an answer.

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**Author:** ![rdandy5875](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rdandy5875/32/7511_2.png) [@rdandy5875](https://forums.speedlife.net/u/rdandy5875)\
**Post date:** [January 17, 2008, 12:11pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/22 "2008-01-17T12:11:27Z")

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> [@Fry](#):
>
> The water level goes down. A buoyant object (like a boat/rock/person system) will displace an amount of water equal to its weight. A non-bouyant object like a rock will displace an amount of water equal to its volume. Since the rock is denser than water, an equal weight of water is more volume than the rock.

+1, read the reply before I though about it myself though.

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**Author:** ![2TurboZ](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/2turboz/32/7577_2.png) [@2TurboZ](https://forums.speedlife.net/u/2TurboZ)\
**Post date:** [January 17, 2008, 12:13pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/23 "2008-01-17T12:13:01Z")

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Because squares are for squares man… /beatnik

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**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\
**Post date:** [January 17, 2008, 12:13pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/24 "2008-01-17T12:13:44Z")

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> [@boardjnky4](#):
>
> these questions arent really there for you to just blurt out an answer. Anyone could study interview questions and show up and toss them around. They want to see how analytical you are. They want you to sit there and analyze a problem in your head and come up with an answer.

obviously :lol:

It just caught me off guard I wanted to see what other people would say…

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [January 17, 2008, 12:16pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/25 "2008-01-17T12:16:33Z")

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I’ve heard that one before. I don’t know if I would have come up with the “not falling in” answer during an interview…

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**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\
**Post date:** [January 17, 2008, 12:17pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/26 "2008-01-17T12:17:03Z")

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I would like to be able to say that I would be calm and collected and reason my way through it, but It def. would have caught me off gurard as well.

i havent been on an interview in a really long time. I’m really nervous about starting em this spring. I spoke to a family friend about tech interviews and he was telling me the types of dumb questions they would ask, that nobody in their right mind would know.

Tricky bastards.

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**Author:** ![OfficerK](https://avatars.discourse-cdn.com/v4/letter/o/4da419/32.png) [@OfficerK](https://forums.speedlife.net/u/OfficerK)\
**Post date:** [January 17, 2008, 12:19pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/27 "2008-01-17T12:19:52Z")

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the plane will take off!

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**Author:** ![2TurboZ](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/2turboz/32/7577_2.png) [@2TurboZ](https://forums.speedlife.net/u/2TurboZ)\
**Post date:** [January 17, 2008, 12:21pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/28 "2008-01-17T12:21:09Z")

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> [@OfficerK](#):
>
> the plane will take off!

More like…The episode will air… 😛

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**Author:** ![RobHimself](https://avatars.discourse-cdn.com/v4/letter/r/e480ec/32.png) [@RobHimself](https://forums.speedlife.net/u/RobHimself)\
**Post date:** [January 17, 2008, 12:46pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/29 "2008-01-17T12:46:28Z")

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> [@OfficerK](#):
>
> the plane will take off!

SOB i was just gonna post that!

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**Author:** ![Anonymity](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/anonymity/32/7215_2.png) [@Anonymity](https://forums.speedlife.net/u/Anonymity)\
**Post date:** [January 17, 2008, 12:48pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/30 "2008-01-17T12:48:28Z")

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> [@Fry](#):
>
> The water level goes down. A buoyant object (like a boat/rock/person system) will displace an amount of water equal to its weight. A non-bouyant object like a rock will displace an amount of water equal to its volume. Since the rock is denser than water, an equal weight of water is more volume than the rock.

so if we take all of the boats out of the ocean the water level would go down?😛

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**Author:** ![Bacon](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bacon/32/7230_2.png) [@Bacon](https://forums.speedlife.net/u/Bacon)\
**Post date:** [January 17, 2008, 12:49pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/31 "2008-01-17T12:49:17Z")

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So if you put a race car running at 200MPH, and a conveyor running 200MPH in the opposite direction with said car on it. What happens when you introduce a manhole cover to the conveyor?

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [January 17, 2008, 12:49pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/32 "2008-01-17T12:49:46Z")

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> [@Anonymity](#):
>
> so if we take all of the boats out of the ocean the water level would go down?😛

Yes it will but I dare you to measure the change.

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [January 17, 2008, 12:50pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/33 "2008-01-17T12:50:08Z")

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> [@FuzzyFish](#):
>
> So if you put a race car running at 200MPH, and a conveyor running 200MPH in the opposite direction with said car on it. What happens when you introduce a manhole cover to the conveyor?

The conveyer takes off.

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**Author:** ![Anonymity](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/anonymity/32/7215_2.png) [@Anonymity](https://forums.speedlife.net/u/Anonymity)\
**Post date:** [January 17, 2008, 12:53pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/34 "2008-01-17T12:53:22Z")

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> [@Fry](#):
>
> Yes it will but I dare you to measure the change.

i would but you didnt double dog so… i cant.

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [January 17, 2008, 12:54pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/35 "2008-01-17T12:54:08Z")

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:lol:

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [January 17, 2008, 12:55pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/36 "2008-01-17T12:55:41Z")

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> [@Anonymity](#):
>
> i would but you didnt double dog so… i cant.

physical challenge?

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**Author:** ![Clean\_Baldy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clean_baldy/32/7308_2.png) [@Clean\_Baldy](https://forums.speedlife.net/u/Clean_Baldy)\
**Post date:** [January 17, 2008, 1:30pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/37 "2008-01-17T13:30:06Z")

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If you put a manhole on a treadmill, it won’t fall into the hole.

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**Author:** ![Justin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justin/32/7459_2.png) [@Justin](https://forums.speedlife.net/u/Justin)\
**Post date:** [January 17, 2008, 1:32pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/38 "2008-01-17T13:32:02Z")

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> [@Fry](#):
>
> The conveyer takes off.

lol

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**Author:** ![FightinMike](https://avatars.discourse-cdn.com/v4/letter/f/7bcc69/32.png) [@FightinMike](https://forums.speedlife.net/u/FightinMike)\
**Post date:** [January 17, 2008, 2:09pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/39 "2008-01-17T14:09:34Z")

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If it wasnt round, how would you move it without a truck:gotme:

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**Author:** ![Justin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justin/32/7459_2.png) [@Justin](https://forums.speedlife.net/u/Justin)\
**Post date:** [January 17, 2008, 2:10pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/40 "2008-01-17T14:10:33Z")

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> [@FightinMike](#):
>
> If it wasnt round, how would you move it without a truck:gotme:

? I don’t get it.

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