General Knowledge - Physics - Discussion

I think there is less normal force so that our feet immersed in sand and we feel difficult.

What is the correct answer? Explain.

I agree with the given answer, option B.

B Option is correct. I agree with the given answer.

Option C is correct.

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

The answer is c.

Option C is right.

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 correct.

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