Transcript Disproving Physics - Philipsburg Osceola Area School

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
~ Through
estimation, we
calculated the
house to be
18800 ft2
~ And for each ft2
the house
weighs 45 lbs.
Weight of the house:
18800 sq. ft. X 45 lbs./sq ft = 846000 / 2.2 = 384545.5 kg
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/t
V = 167.2 / 7.85 - time estimated from movie
V = 21 m/s
How much force will Mr. Fredrickson
need to stop the house from falling?
Ft = m ( vf- vi )
F(7.85) = 384545.5 (0 - 21.3)
F(7.85) = -8190819.15
F = -1043416.5 N of Force!
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/heliumcylinder.html