Subject:
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Re: VERY [OT] Feathers 'n Lead...
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Mon, 12 Jul 1999 15:39:25 GMT
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Viewed:
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1544 times
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In lugnet.robotics.rcx, Michael Nickasch writes:
>
> > I remember seeing some footage of a feather and a hammer? being
> > dropped by an astronaut on the moon's surface. They both hit the ground at
> > the same time, which proves to mee that even a single feather is as heavy
> > as a hammer, so I could assume that a HUGE 25 lb bag of feathers weighs even
> > MORE than a bag of lead.
>
> the dropping of the objects on the moon was to prove that when 2 objects are
> dropped from the same height in an environment with little or no friction
> they will hit the ground at the same time. both bags weigh the same, one is
> more bulky and due to size will have a greater inertia because of the energy
> needed to move it, both will require the same ammount of work.
I think the original poster was putting his tongue firmly in cheek there.
BTW, the dropping of objects would be a second experimental proof that gravity
affects all objects equally regardless of weight. Best test being in a vacuum
where you could drop two wildly different objects with no air friction
component.
DLC
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Message has 1 Reply:
 | | RE: VERY [OT] Feathers 'n Lead...
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| (...) Sorry for the extra quoting here, but the thread was a bit old...and just for everyone's info, both bags have the SAME mass, so they have the same first moment of inertia....I think. The shape of the object generally affects the SECOND momemnt (...) (25 years ago, 12-Jul-99, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Re: [OT] Feathers 'n Lead...
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| (...) being (...) as (...) MORE (...) the dropping of the objects on the moon was to prove that when 2 objects are dropped from the same height in an environment with little or no friction they will hit the ground at the same time. both bags weigh (...) (25 years ago, 12-Jul-99, to lugnet.robotics.rcx)
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