Question

Why is it easier to push an empty box than to push the box full of books?

Answer 1

it is easier to push the empty box and the to push the box full of books because the box full of books has much greater weight as compared to the empty one and that weight is nothing but the force or trust that is acting perpendicular Tothe ground .. so if there is more thrust then the friction will also increase and hence the empty box has very few or less friction as compared to the box full of book


so we can justify here that the more weight will give the more friction and become harder to push it. so the box full of books is harder than the empty box to push it.
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Answer 2

It is easier to push an empty box than to push the box full of books due to the friction.In empty box friction is less and friction is more in box full of books.
:More friction =more force
:less friction =less force