ShmoopTube

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Thank you We sneak and here's your shmoop du jour

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brought to you by systems there's the digestive system the

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immune system the wait what's that well is it the

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ap Physics not biology boy All right a bug is

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sitting on a pencil Ah physics teacher then picks up

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the pencil Which of the following could be considered as

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an object in the system and hear the potential answer

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Is that a bug a pencil physic classroom bug and

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a pencil All right well first of all what do

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we even mean by system Well in physics a system

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is a collection of objects his properties influence the motion

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of things inside the system that might be a little

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confusing So let's think about it in terms of this

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situation we've got the teacher we've got the bug and

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we've got the pencil All of this is happening in

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a classroom However the classroom isn't influencing anything in this

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situation So it's not part of our particular system which

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means we can eliminate option c now the bug crawls

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on the pencil and just sits there It's not trying

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to move the pencil it's not flapping its little bug

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wings to try and lift the pencil up We'll sure

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it added weight to the pencil when it first crawled

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on But now it's just chilling if the teacher was

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using one hand to lift The bug and the other

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lift the pencil Well then we'd have three objects in

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the system Teacher the bug in the pencil But in

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our question when the teacher picks up the pencil with

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the bug sitting on it she's not acting on the

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two things independently she picks both of them up is

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if there were one object which in this system they

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are i think of it as bug insult or pencil

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lug so option d is the correct answer In this

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system we have two objects the teacher and the pencil

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bug combo answers a nd while technically correct just aren't

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complete enough If you're still thrown off consider this let's

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Say you have a brand new baby cousin she's tiny

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weighing in at exactly ten pounds Being a nice older

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cousin you volunteer for feeding duty and give the kiddo

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four ounces of formula after she finishes her lunch You

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wouldn't say you have a ten pound cousin with four

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ounces of food inside of her You have a baby

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that weighs ten pounds four ounces An object in the

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system is the thing that is doing the influencing or

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the thing that is being influenced an object isn't every

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little part that makes up a thing After all pretty

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much everything could be broken down into smaller components You

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know now that we think about it there's a lot

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of physics going on in the body systems too Just 00:02:27.2 --> [endTime] ask the skeletal system

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