General Knowledge - Physics - Discussion

Yeah, option B is right because friction helps us to walk and where there is a less friction like on the sand, it is difficult to walk and therefore on the rough surfaces line get road there is more friction which helps us to walk easily.

Option B is correct.

@Koushik.

Who told you won't fall on sand?

The answer is sand are dust particles and can blow away by wind and road thick and it so cannot blow away by the wind so when the wind blows the sand flies away and we will loose grip but on road, the concrete stays strong and we can walk easily.

I think option C is correct.

This phenomena proves that action force is more and reaction force is less. Less friction is negligible but more friction is cause for unequal action and reaction which challenges Newton's third law of motion. There are many evidences in our universe which has unequal action and reaction.

I have proved these things in practical, mathematical way and logical way with a new law. The research paper has been submitted to APS (American Physical Society) journal.

Option C is correct.

Because if there is more friction then it is more difficult to walk than in concrete.

When we drag a drum, it has more friction on the surface, while when we roll a drum it has less friction. Hence rolling a drum causes less friction and easy to transport.

Similarly walking on sand causes more resistance ( i.e 1 more friction) on foot, causing difficult to walk. While on concrete there is lesser resistance (i.e 5 less friction compared to that of sand and foot), resulting in an easier way to walk.

In addition as explained earlier by Prashant - When your feet slip, that means there is less frictional force between your feet and the path you walk.

When your feet stick, that means there is a more frictional force between your feet and the path.

So it is difficult to walk if there is a more frictional force and also less frictional force.

Hence I seems option C is correct.

Option C is right.

The answer is c.

I think option C is right since friction stands for the opposition offer in a walk.