Brian Mullin - Balls Out Physics Episode 5.2: Conservation of Momentum in Space
Dear Brian Mullin,
Fact check = You fail
with your spring analysis at time mark 8:45.
BY releasing the spring YOUR CRAFT WILL GO NOWHERE.
This is just high school physics.
The craft and spring will just oscillate back and forth ever so so so slightly around the common center of gravity CM of the whole structure. When the springs energy is completely expended the craft will be in exactly the same position as before the spring was fired open.
See picture 1 below.
>>>>>>>>>
Fact check = YOU FAIL
at time mark 13:42.
Your formula is not correct for water rushing though a nozzle...
The correct formula is...
Calculate Nozzle Reaction = Nozzle Pressure = NP psi = [(gpm)/(29.71 x D²)]²
Example: How many pounds of thrust will be produced by the energy generated sandbags (a stop) should be used to counter the reactive force generated by a 1.25 inch-or a 1-inch-bore-diameter nozzle at 400 gallons per minute?
Calculating the Nozzle Reaction for a 1.25-inch-Bore-Diameter Nozzle. The solid bore discharge formula is gallons per minute (gpm) = 29.71 D² NP¹/². The formula can be rewritten to solve for the unknown, nozzle pressure:
Nozzle Pressure = NP psi = [(gpm)/(29.71 x D²)]²
Where:
gpm = 400 gpm
bore diameter (D) = 1.25 in
therefore:NP = [(400gpm)/(29.71 x 1.25²)]²
NP = 74.25 psi
The formula for nozzle reaction (NR) for solid bore nozzles is NR = 1.57 D²NP therefore:NR = 1.57 x 1.25² x 74.25
NR = 182 lbs reactive force thrust per minute.
See picture 2 below.
>>>>>>>>>
Fact check = You FAIL
There are MANY PROBLEMS with your flashlight/spotlight Sun model. Here are only three of them.
On your flat Earth...
1) The Sun never rises in the east, nor sets in the west; it just goes round and round up in the sky.
2) An observer would see the Sun up in the sky suddenly start shining, and later fade away and finally blink out at the end of the day.
3) Since the Sun is always up in the sky for everyone, only visible at times (their daylight hours) and invisible at other times
What causes the Sun to shine like a spotlight?
What is physics of illumination for a Sun 35-miles in diameter and 3,000 feet above the surface?
There needs to be some covering over the sun (as in a spotlight) forcing the light to only shine in one direction, and not everywhere (360 degrees) at once.
Here on Earth we experience NONE of those things.!!!
See picture 3 below
Posts at - https://plus.google.com/112395025400327394667/posts
Discussion at - https://www.youtube.com/channel/UC7ipUKERU0tzYFxALJBli4A/discussion
his deleted Video at...
(https://www.youtube.com/watch?v=Jq3dU2Ju_is)
Live mirror video currently at..
https://www.youtube.com/watch?v=DHeO22EjHkI&list=PLYI8318YYdkD_VW7u3EMBq-MeNIuHRnb4&index=9
kind regards, JonahTheScientist
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Picture 1 (http://www.physics.uci.edu/~demos/images/Demos/Sprmass.gif)
Picture 2
(http://figures.boundless-cdn.com/17400/full/flow.jpeg)
Picture 4
(The Creators Calendar)
