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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


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    Staff Emeritus
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    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 ?
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