Neha has to push a lighter iron box and Sohit has to push a heavier box of iron on the same floor. Who will have to apply a larger force?
It rubs against the ice
Frictional force depends on the normal reaction of the object which is pushed on the surface. Heavier the object, larger is the force applied on the surface. As both Neha and Sohit are pushing the object on the same floor, Sohit will have to apply a greater force as he is pushing a heavier box.