Question

roll a ball on your school ground what happens it stops after sometime now roll the ball with the same force on the patch of Grassy
surface what do you notice now it stops after an even shorter distance what will happen if you roll the ball with almost the same force on a smooth surface like marble or granite floor the ball with roll for a greater distance

in the above activity can you guess which surface offered maximum frictional force and with the least

Answer 1

Hi,
The max. frictional force was offered on the patch of grass and min. frictional force was offered on smooth surface like granite or marble floor.
This is because the place where there is more rough surface there woul be more friction.