Question

Why Less force is needed to push a lighter box then to push a heavier box ?

Answer 1

because lighter box has less weight where as heavier box has more. thus the friction is less in lighter box and in heavier it is more

Answer 2

hey ! !
here's ur answer
we need less force to push a lighter box then to push a heavier box because the mass and the volume of lighter box is less than a heavier box

Hope this is helpful. ...... :)