Your friend has a 4kg dog and “For the ’gram” they want to attach balloons to it until the dog/balloon system has a neutral buoyancy. Air has a density of 1.205 kg/m3 and you may treat the balloons and string as massless. d) Write Newton’s 2nd Law for the dog and solve the Volume of the Balloons needed to accomplish this task. e) If a balloon is a perfect sphere of radius 15cm, how many Heliumballoons are needed?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
Your friend has a 4kg dog and “For the ’gram” they want to attach balloons to it until the dog/balloon system has a neutral buoyancy. Air has a density of 1.205 kg/m3 and you may treat the balloons and string as massless.
d) Write Newton’s 2nd Law for the dog and solve the Volume of the Balloons needed to accomplish this task.
e) If a balloon is a perfect sphere of radius 15cm, how many Heliumballoons are needed?
f) Find what the Volume Needed would be if we replaced Helium with Nitrogen (density 1.165 kg/m3 )
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