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AP Physics 1: 3.5 Fields in Space 171 Views
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Description:
Aaaaaand we have liftoff! On another shmoopy question, that is. Take a look at this question and see if you can figure it out. Don't worry if you can, just say "Shoomp-ston, we have a problem" and we'll help you out.
Transcript
- 00:00
Thank you We sneak and here's your shmoop dooz your
- 00:05
brought to you by the speed of light And you
- 00:07
thought ferraris were fast All right a spaceship is blasting
- 00:12
off on a brave mission to explore the planet zebo
- 00:17
as it breaks free of earth's atmosphere Which of the
Full Transcript
- 00:19
following is true about the situation Select two answers your
- 00:23
tens ones All right Well there are two important things
- 00:27
we need to remember in order to answer the question
- 00:29
The first is that if something has mass than it
- 00:31
has gravity it doesn't matter if that something is as
- 00:34
big as a star or a small is a pebble
- 00:37
We also need to remember the gravity doesn't go away
- 00:41
now the father away from an object we are the
- 00:43
less we feel the force of that gravity But that
- 00:46
doesn't mean the gravity has stopped After all we know
- 00:49
about the gravitational constant right Well with this knowledge in
- 00:52
our back pocket we can rule out option a or
- 00:55
a still exerts a gravitational pull on the spaceship All
- 00:58
right option d is incorrect to the spaceship doesn't begin
- 01:01
to generate its own gravity It's always generated its own
- 01:05
Gravity but the further away we get from the object
- 01:08
well yeah then the less gravitational force that object exerts
- 01:12
on this For example gravity on jupiter is two and
- 01:15
a half times stronger than gravity on earth but because
- 01:18
we're so far away from jupiter will never feel that
- 01:21
pull All right so option c is one of the
- 01:25
correct answers The gravitational force exerted by the earth decreases
- 01:28
as the spaceship travels further away Yeah and we're left
- 01:32
with option b is our other correct answer Wait is
- 01:35
dependent on gravity that's why things float in space where
- 01:38
gravity is weak but mass is mass It doesn't change
- 01:43
masses what an object is made of whether we're talking
- 01:46
about inertial mass or gravitational mass Gravitational mass refers to
- 01:50
a method of measuring mass but it doesn't change depending
- 01:52
on gravity So there we have it Our answers here 00:01:55.08 --> [endTime] a b and c
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