A light balloon is filled with helium at standard temperature and pressure, and is then
released from the ground.
Use the densities of helium (0.178 kg · m3)
and air (1.29 kg · m3) to find its initial acceleration. The acceleration due to gravity is
9.8 m/s2 .
Answer in units of m/s2

Question

A light balloon is filled with helium at standard temperature and pressure, and is then
released from the ground.
Use the densities of helium (0.178 kg · m3)
and air (1.29 kg · m3) to find its initial acceleration. The acceleration due to gravity is
9.8 m/s2 .
Answer in units of m/s2

anonymous · Answer

the acceleration is caused by the upward force beacz heleium is lighter thn air
lets take V as the volume of helium
upward force= V*density of air ( Arcimides Law)
Weight of helium= V*density of helium*g
nw lets apply F=ma
  V*density of air-V*density of helium*g = V*density of helium * a
divide by V
density of air - g*density of helium = density of heilum* acceleration
nw solve it

anonymous · Answer

I got -2.55281 and the computer said it was wrong