Question

how can we Prove that ....W=mg

Answer 1

Hi friend, Here is the required answer:-
We know that F= ma
So when the object is thrown downwards then the acceleration would change into gravitational acceleration I.e. g.
So , F=mg
Now we know that weight is also equal to the force applied so, W=mg.
Hope this helps you...
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Answer 2

Hi friend,
we know that F= ma
weight is also a force so W= ma 
also a= acceleration due to gravity
so we can write a=g
so we get W=mg
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