Gravitational Field and Intensity
Today topic is gravitational field and its intensity, You will learn in this post, what is field and how this field is created and what is strength or intensity of this field. This is new concept of gravitation and interesting,In previous topic you have learned in details about Gravitational force, that concept of point mass will be also use here to understand better about gravitational field, so you can refer first Gravitational force introduction. Now lets start and learn some new concept for gravitational field.
Gravitational field and electric field are similar, Gravitational field concept will apply in electric filed. Only difference is that in gravitational field mass will be source of field but in electric field charge will be source of electric field.
Gravitational field is always attractive in nature but electric field attractive as well as repulsive depend upon charge nature positive and negative. you will learn latter about electric field, here you will learn best concept for gravitational field.
Gravitational field
See the picture above, Suppose a room is completely vacant, now you released a very small mass then that mass automatically start to moves towards a particular direction as shown in picture.
Now you were start thinking how this mass is moving, so that nothing is pushing the mass but it is moving, the thing which is invisible but effect are showing mass is moving, Then i told you that there is an imaginary field, Someone has made this field due to which this small mass is pulling, After that you remove the screen and found that Oh, There is a big mass, Now you clearly think that definitely big mass is pulling the small mass by law of gravitation.
Hence this big mass has created gravitational field. Since the big mass will not seen but its effect you seen this is the imaginary field. This is a hypothetical concept story imaginary field but in actual not like this happen.
