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This presentation discusses how to move objects in a microgravity environment.
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2. What is this all about?
This course will teach you how to work in a team, communicate with
others in writing and verbally, and use what you know.
Scientists and engineers must do all of the above well.
This unit will show you how to tackle tough real-life NASA problems
by working on simple problems.
Make no mistake though, these are real-life problems with possible
deadly consequences.
3. Moving In Space
Some people believe that it is easy to move in space.
Although you appear to weigh nothing, you still have to contend
with Newtons Laws of Motion.
In Warner Brothers Cartoons they often had the characters do
incredible things like falling to Earth at a high rate of speed and
then stop quickly before hitting the ground.The character would
then say something like, I never studied law.Cute but deadly in
real life.
As you read earlier, a lack of understanding of the basic laws of
physics could end your career, abruptly.
4. Newtons First Law of Motion
An object in motion tends to remain in motion unless acted upon by
an unbalanced force.
If you throw a ball it should go on forever.Instead what
happens?What outside force(s) keep it from going on forever?
An object at rest tends to remain at rest unless acted upon by an
unbalanced force.
If you put a pencil on a desk it will stay there forever.
If you came back the next day and the pencil wasnt there, what
would you think happened to it?
5. Newtons Second Law of Motion
Force = mass x acceleration(F=mA)
Ever try to push a dart into a dartboard.Pretty hard.What is an
easier way?
Why is it easier?Did you increase the mass of the dart? (make it
stronger?)
Once you accelerate the dart it has a force. At the end of its
flight, assuming no loss of velocity, it should have the same
force.What to try to catch the dart?
6. Newtons Third Law of Motion
For every action there is an equal and opposite reaction.
If you blow up a balloon and let it go, the gas escaping from the
bottom of the balloon causes an unequal force toward the top of the
balloon making it move.
7. What are we going to do?
In this lesson we are going to apply Newtons Laws to the astronauts
on orbit.