Disproving Physics Disney Pixar “Up”

Lauren Simcox & Becky Shaw

Objective

• Using mass, acceleration, velocity, time and force to disprove the scene where Mr. Fredrickson stops the house from falling off the blimp.

Movie Scene

• Russel sails the house towards the blimp.• Charles Muntz shoots some of the

balloons holding the house, causing it to fall onto the blimp.

• The house slides to the tail fin of the blimp, and Mr. Fredrickson stops the house from falling by holding a hose attached to the house.

• www.youtube.com/watch?v=rV6rNqin4P8

Calculations:

National Geographic Results:~ 300 balloons to make the house float~ Each balloon could hold one tank of helium

Volume of a Balloon:

V= 4/3 πr3

=4/3 π(.1143m)3

= .00625m3

Number of Regular Balloons needed to float the house :

6 m3 = .00625 (X) m3

= 960 - # of balloons that one tank of helium can fill. 960 (300) = 288000 - regular sized balloons to float the house

Weight of the house:

18800 sq. ft. X 45 lbs./sq ft = 846000 / 2.2 = 384545.5 kg

~ Through estimation, we calculated the house to be 18800 ft2

~ And for each ft2 the house weighs 45 lbs.

The distance the house slid: 41.8 ft - one side of the house X 4 - estimated distance 167.2 ft - the house slid

Velocity the house moved at:V=d/tV = 167.2 / 7.85 - time estimated from movieV = 21 m/s

Ft = m ( vf- vi )F(7.85) = 384545.5 (0 - 21.3)F(7.85) = -8190819.15F = -1043416.5 N of Force!

How much force will Mr. Fredrickson need to stop the house from falling?

Can Mr. Fredrickson Stop It ?!?!

No he can't....It would be impossible for him to use over 1 million newtons of force to stop the moving house sliding along the blimp.

The End

Thanks for Watching!

Works Cited

•www.youtube.com/watch?v=rV6rNqin4P8• http://science.howstuffworks.com/helium2.htm

• http://www.alibaba.com/showroom/helium-cylinder.html