You might think that studying hard for a test is a lot of work. But in physics, the sad reality is - it's not considered work.
Your brain is working hard, but you're not applying force to move an object.
In physics, work is done only when a force is used to move something.
Now, let's look at an example. Imagine playing flag football. You're running and throwing a ball.
That's work because you're using force to move both your body and the ball.
So, the amount of work you do depends on the force you apply to an object and how far you move an object.
We even have a formula to calculate work; that is, work equals force multiplied by distance.
Using more force or moving an object at a greater distance results in more work being done.
To understand this, consider two weightlifters lifting the same weight. The one who lifts it higher does more work because they move the weight a greater distance.
You might think that studying hard for a test is a lot of work. But in physics, the sad reality is - it's not considered work.
Your brain is working hard, but you're not applying force to move an object.
In physics, work is done only when a force is used to move something.
Now, let's look at an example. Imagine playing flag football. You're running and throwing a ball.
That's work because you're using force to move both your body and the ball.
So, the amount of work you do depends on the force you apply to an object and how far you move an object.
We even have a formula to calculate work; that is, work equals force multiplied by distance.
Using more force or moving an object at a greater distance results in more work being done.
To understand this, consider two weightlifters lifting the same weight. The one who lifts it higher does more work because they move the weight a greater distance.
You might think that studying hard for a test is a lot of work. But in physics, the sad reality is - it's not considered work.
Your brain is working hard, but you're not applying force to move an object.
In physics, work is done only when a force is used to move something.
Now, let's look at an example. Imagine playing flag football. You're running and throwing a ball.
That's work because you're using force to move both your body and the ball.
So, the amount of work you do depends on the force you apply to an object and how far you move an object.
We even have a formula to calculate work; that is, work equals force multiplied by distance.
Using more force or moving an object at a greater distance results in more work being done.
To understand this, consider two weightlifters lifting the same weight. The one who lifts it higher does more work because they move the weight a greater distance.
View the full transcript and gain access to JoVE Core videos
From Chapter undefined: