Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: Weight of cup of water with a floating piece of wood?

Learn more physics!

Most recent answer: 12/20/2016
Q:
What weighs more: a cup of water filled to the brim or that same cup of water, also filled to the brim, with a piece of wood floating in it? Why?
why people cheat infidelity signs how many people cheat
the best android phone mealmixer.com phone tracking apps
internet drug coupons site prescription coupon
internet drug coupons coupons for prescription medications prescription coupon
free prescription cards nwwebdesigns.net walgreens prints coupon codes
coupons rx prostudiousa.com www.januvia.com coupons
free viagra samples coupon open viagra 2016 coupon
viagra coupons from manufacturer liberitutti.info drug discount coupons
viagra coupon card blog.brunothalmann.com viagra free coupon
coupons prescriptions blog.brunothalmann.com manufacturer coupons for prescription drugs
manufacturer coupons for prescription drugs online viagra coupons coupon prescription
manufacturer coupons for prescription drugs viagra 2016 coupon coupon prescription
where buy viagra online http://viagraforsaleuk1.com online viagra buy
cialis coupon card eblogin.com cialis coupons from manufacturer
lilly cialis coupon click coupons prescriptions
discount prescription drug cards open prescription discounts cards
champix alkohol mdwguide.com champix
diflucan 150 diflucan djelovanje diflucan sirup
kamagra wikipedia blog.jrmissworld.com kamagra shop
ibuprofen rapid tracyawheeler.com ibuprofen
cialis open cialis walgreen coupon
cefdinir red stool ski-club-auringen.de cefdinir nedir
cialis coupon card coupon prescription cialis coupon

- Ellie (age 15)
Austin, Texas
A:
Nice question: it makes you think.   The answer is they weigh the same because the floating wood displaces an amount of water equivalent to its own weight. That's what Archimedes figured out a long time ago. This displaced water dribbles down the side of the glass.  The remaining water plus the weight of the wood add up to the amount of the water only case.

LeeH
why people cheat infidelity signs how many people cheat
cheater what to do when husband cheats wifes who cheat
hillcrest abortion clinic site live abortion video
the best android phone mealmixer.com phone tracking apps
internet drug coupons coupons for prescription medications prescription coupon
married woman looking to cheat go most women cheat
cvs discount card cvs new prescription coupon prescription drugs discount cards
discount card prescription site print cvs
diprolene kamagra furosemide 40mg
imitrex 50mg thyroxine flagyl 200mg
online discount pharmacy viagra coupons and discounts coupon for prescription
prescription drugs discount cards blog.plazacutlery.com coupons for viagra printable
manufacturer coupons for prescription drugs online viagra coupons coupon prescription
1 wk pregnant abortion pill article on abortion
lisinopril and energy drinks lisinopril and energy drinks lisinopril and energy drinks
acheter viagra pas acheter viagra pas acheter viagra pas
viagra bestellen online viagra pillen kruidvat pillen kopen
discount prescription drug cards nationalautocare.com prescription discounts cards
discount prescription drug cards nationalautocare.com prescription discounts cards
voltaren ára go voltaren
venlafaxine gewichtstoename read venlafaxine fk
augmentin générique arbot.cz augmentin sirop
sildenafil pfizer dotnetblogengine.net sildenafil sandoz
cialis coupon card evans.com.mx cialis coupon

(published on 10/09/2011)

Follow-Up #1: weight of water plus float

Q:
Are you sure about that? Archimedes law states that the weight of water displaced is equal to the upward thrust and not its own weight right? Assume a cuboid wood of some area (area = A) and height h is in water. Let it be immersed till height x (x < h). So the volume of wood immersed in water is A*x. The Volume of water displaced is also A*x. The Density of water > density of wood. So the weight of water displaced is more than the weight of wood immersed. So the weight of the cup with water till brim must weigh more than the one with wood, right?
- Dee (age 29)
A:

Don't forget to include the weight of the part of the wood out of the water. Including that makes them equal.

Mike W.


(published on 12/20/2016)

Follow-up on this answer.