1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Cylinder with buoyency

  1. May 29, 2017 #1

    ehf

    User Avatar

    1. The problem statement, all variables and given/known data
    A cylinder shape object with a movable piston is 1.5 times of its own weight. The mass of object is figure. The initial buoyant force of the object is the waterVt.41 R Pititon iri, cylinder is Vi. and P1. Ignore the net volume of the tinder aP Before floating in the water container as shown in the Ina, and the volume and pressure of air inside Piston 1 cylinder material. The pressure at the top of water After container is set to be 0. Assume the temperature is (1)SP is applied from an external syringe. (2) and (3) show shapes of the cylinder before and after applying so P. constant. (a) Find out the required ratio of length /2/11 to make the object start to sink. [2 points] (b) In a case that we ignore the pressure due to water depth, find the minimum pressure aP to be applied to the water in order to make the object sink. [4 points] (c) In a case that we consider the pressure due to water depth, find the minimum pressure a p to be applied to the water in order to make the object sink. [4 points]
    http://i.imgur.com/iVok98y.jpg
    Well im sorry but i have an exam coming up so what i can do is a simple OCR. if you click the imgur link it is perfectly visible.

    2. Relevant equations
    P=P0+ρgh
    F=mg=ρgV
    3. The attempt at a solution
    1 and 2 is about it but i dont know whether to consider the l1 and l2 or the whole container.
    again, this imgur link is good.
    http://i.imgur.com/59Ew8vJ.jpg
     
  2. jcsd
  3. May 29, 2017 #2

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    As I posted before, your answers to parts a and b look fine, but the last part is unintelligible.
    Take the trouble to type your working in and explain what you are doing.
    That's why @Mark44 closed the thread.
     
  4. May 29, 2017 #3

    Drakkith

    User Avatar

    Staff: Mentor

    Please follow haruspex's advice before reposting.

    Thread locked.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Cylinder with buoyency
  1. Motion of cylinder (Replies: 30)

  2. Cylinder Pressure (Replies: 0)

  3. Charge on a Cylinder (Replies: 1)

  4. Cylinder with buoyency (Replies: 6)

Loading...