Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Buoyant forces on hot-air balloon

  1. Jan 25, 2005 #1
    hey guys i have an exam tomorrow so i guess a uick reply would help .. my mind is totaly blocked as to how to solve this question.

    hot air baloon experiences an acceleration of 1.10m/s total mass equals 315kg
    a) what is the upward (buoyant) force on the system
    b) the baloonist wishes to change the acceleration to zero there is no fuel ......determine the mass of ballast that must be thrown of ......air resistance neglegible..

    if anyone could answer this it would really help.
  2. jcsd
  3. Jan 26, 2005 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Sorry franklyn, but we can't help you (read the rules) unless you make an effort.

    Calm down. Do not panic.

    What ideas do you have ? What concepts/equations might be involved here ?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook