This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: R The variables are: R =12 . m V =? He =0 . 16 kg/m 3 air =1 . 25 kg/m 3 M air =? M He =? M b =196 . kg m =? W air =? W He =? W b =? Archimedes Principle states that the bouyant force is equal to the weight of the displaced Fuid, where the weights are the forces. So: W air = W b + W He + W m M air g = M b g + M He g + mg M air = M b + M He + m Solving for m , and invoking the relationships = M/V and V = 4 3 R 3 : m = M air-M b-M He = air V-M b- He V = ( air- He ) 4 3 R 3-M b Substituting in values: m = 4 3 ( air- He ) R 3-M b = 4 3 (1 . 25-. 16) kg/m 3 (12 m ) 3-196 . kg = 4 3 1 . 09 kg/ a a m 3 1728 . a a m 3-196 . kg = 7889 . 7 kg-196 . kg inally m = 7693 . 7 kg 2...
View Full Document
- Spring '10