Ask Experts Questions for FREE Help !
Ask
    vovo's Avatar
    vovo Posts: 3, Reputation: 1
    New Member
     
    #1

    May 19, 2012, 03:18 AM
    Please help its first thing tomorrow
    A large tank contains a liquid of density 1100kg/cubic meters. A small wooden block of uniform density is held suspended by a cord near the bottom of the tank.

    When the cord is cut, the block is observed to rise vertically, without rotating a distance of 15.0 meters in 4.70 seconds. From this information deduce the density of the wood
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
     
    #2

    May 19, 2012, 03:20 AM
    So what do YOU think.
    We're happy to help, but we will NOT do all of the work for you.
    Show use what you have done so far.
    vovo's Avatar
    vovo Posts: 3, Reputation: 1
    New Member
     
    #3

    May 19, 2012, 03:35 AM
    But I didn't get an answer
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
     
    #4

    May 19, 2012, 03:47 AM
    The working is more important than the answer
    vovo's Avatar
    vovo Posts: 3, Reputation: 1
    New Member
     
    #5

    May 19, 2012, 08:40 AM
    Quote Originally Posted by Curlyben View Post
    The working is more important than the answer
    Please show me theworkin then
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
     
    #6

    May 19, 2012, 08:54 AM
    That's what I was asking you for..
    After all if you have no idea how to work this out then you need to refer to your text books and what you have recently been doing in class.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
     
    #7

    May 21, 2012, 06:31 AM
    Here's a hint to get you started - there's a force acting upwarrd due to the buoyancy of the wood, and there's a force actig down due to its weight. The result of these two forces is upward movement at some acceleration that you can calculate from the data you've been given. The only "trick" is to know that the upward force due to buoyancy is equal to the difference between the weight of the wood block and the weight of the liquid of the same volume as the block.

    One other thing: though you don't say it explicitly I think you can assume that any drag on the motion of the block as it rises due to viscosity of the liquid can be ignored.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

At home jobs good thing? Or a bad thing? [ 5 Answers ]

I have a two month old little girl, and a job I have had for almost 4 years. When I first found out I was pregnant my boss and I sat down and discussed my future with the company. We decided that after my maternity leave I would come back part time (20 hours) until January of 2009. I am now back...

I need help for the algebra 1 exams tomorrow [ 1 Answers ]

How can you help me study for the algebra1 exams tomorrow?

Feeling like death and have a test tomorrow! [ 1 Answers ]

It started this morning, I had a really sore throat and there was a bit at the back that stayed dry when I drank something, like it was going around it. And then I started getting tired and I began getting headaches and joint pains. I had a test this after noon and by the time I had gotten half...


View more questions Search