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Object Interaction and Forces Videos 13 videos
If there's one good thing about the heat death of the universe, it's that we'll all have an excellent excuse for dodging physics homework.
The real moral of the story here is just "don't get in the way of elephants or tigers." That is not the kind of kinetic energy you want to absorb.
Hi there. We'd like to wave hello to you, but the internet isn't letting us. So instead, accept this fun question about waves and physics! It's alm...
AP Physics 1: 3.2 Object Interaction and Forces 189 Views
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Description:
Put some spring in your step with this shmoopy AP Physics question! ....Bet you have no idea that this question is going to be about springs...
Transcript
- 00:00
Thank you We sneak and here's your shmoop too sure
- 00:05
brought to you by basketball tryouts We were all set
- 00:08
to make the best ball team until they told us
- 00:10
our springy shoes were their words against the rules All
- 00:14
right What is the restoring force on a spring with
Full Transcript
- 00:17
a spring constant of five newtons per meter that has
- 00:19
stretched toe four meters and hear the potential answers dinner
- 00:24
All right well the answer this question We need to
- 00:26
be familiar with hooks law which is stay away from
- 00:29
hungry crocodiles Wait That's captain hook's a lot of different
- 00:32
things Books lot tells us that the restoring force of
- 00:35
a spring is equal to its constant times its displacement
- 00:40
or how much it stretched Any equation k is the
- 00:43
spring constant and x is displacement Since the spring constant
- 00:48
is reacting against a force hey is expressed as a
- 00:51
negative number Well luckily for us his question is crazy
- 00:54
generous and gives us both of the numbers we need
- 00:57
to solve it So in this case the force equals
- 00:59
negative five newtons per meter times four meters giving us
- 01:02
an answer of negative twenty newtons making the correct answer
- 01:05
Option d you can also use hooks a lot of
- 01:08
fine the restoring force of a compressed spring The formula
- 01:11
would be the same but since the spring is compressed
- 01:15
the displacement would be expressed as a negative number And
- 01:18
since both the spring constant and the displacement would be
- 01:21
negative the resulting force would be a positive number So
- 01:25
with this knowledge hopefully we can perfect are springy shoes
- 01:28
because well it turns out we're still having some issues
- 01:30
with
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