Aballoon filled with helium gas has an average density of q,-0.41 kg/m'. the density of the air is qa-1.23 kg/m3. the volume of the balloon is vb 0.048 m3. the balloon floats upward with acceleration a.
(a) express the acceleration of the balloon a in terms of the variables given in the problem statement, assuming upwards is the positive direction
part (b) calculate the numerical value of a in m/s
Answers: 1
![(Qa*g*Vb)-(Qh*Vb*g)=(Qh*Vb*a)\\where \\g=gravity [m/s^2]\\a=acceleration [m/s^2]](/tpl/images/0404/8306/8e8cd.png)
![massball=densityheli*volumeheli\\\\massball=0.41 [kg/m^3]*0.048[m^3]\\massball=0.01968[kg]\\\\](/tpl/images/0404/8306/73f81.png)
![Fb=densityair*gravity*volumeball\\Fb=1.23[kg/m^3]*9.81[m/s^2]*0.048[m^3]\\Fb=0.579[N]](/tpl/images/0404/8306/35b8f.png)
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Aballoon filled with helium gas has an average density of q,-0.41 kg/m'. the density of the air is q...
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