Dimension in Physics

Hello, in this video I'm going to focus on dimension in physics

Well, you need to understand that the dimension of physical quantity simply refers to the way it is related, connected or associated to fundamental quantities

The method of dimensions can be used to find a relationship between quantities when mathematics is too difficult

Additionally, it has been extensively used in hydrodynamics to show the formula is correct or homogeneous

For example, we have maths. In dimension, we have what we call... Sorry

We have what we call mass. We have length and we also have time

This is mass, this is length, and this is time

The mass in terms of dimension we express it as capital Leta M It represents the unit kilogram

Length stands as capital L and it represents the unit meter. Time stands as

time, sorry, capital T, It turns as capitality and it represents unit seconds

Now, for instance now, let's assume we are supposed to find the dimension of distance

We know that distance, the SI unit of distance is measured in meters

And as you can see here distance which is measured in meters therefore the dimension of distance is L Let assume we want to find the dimension of speed is equal to

we know that speed is measured in meter far same way. Why because speed is distance over

time and the dimension of distance is L here which is in meters therefore

we write L dimension of time is what is T here which is in seconds and this is

seconds therefore this is T we put this was inside bracket inside

According to the laws of indices, 8 to the far of minus 1 is equal to 1 over 8

Therefore it is possible for us now to say that this is going to give us L bracket this T But remember this is 1 over t because this is the same thing as l times one over t and this

constants as t to the power of t to the power of t therefore minus one therefore we

have l t to the power of minus one therefore we have l t to the power of minus one therefore

Therefore, this is the dimension of speed. You can go ahead and find out the dimension of acceleration

We know that acceleration is in meter per second square. Therefore, this is going to be meter is measured in lead bracket and second is measured

in time or foot time and square. This is going to give us L

t d d dvara of sorry we have two here because of this therefore it will become an

inverse therefore we have L t d d dv minus 2 so we can go on and on to find the

dimension of other materials