Question

Paul is applying a large force in
order to push a heavy box lying on
the floor. Then his elder brother
spreads a little bit of oil on the
floor .Now Paul feels relatively
easier to move the box This
happens because​

Answer 1

Answer:

This happens because of frictional force of the ground, where the elder put some oil on it and thus the impurities of the ground is covered with the oil and the box free to move bit easily.