General Knowledge - Physics - Discussion

Discussion Forum : Physics - Section 1 (Q.No. 22)
22.
It is more difficult to walk on a sandy road than on a concrete road because
sand is soft and concreter is hard
the friction between sand and feet is less than that between concrete and feet
the friction between sand and feet is more than that between concrete and feet
the sand is grainy but concrete is smooth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
35 comments Page 3 of 4.

Sivaranjani said:   9 years ago
There is also friction in the concrete road that's the reason we are able to walk. But in the sandy road, we usually press our feet hard on it to walk since we don't actually get a good grip.

This is because the friction between the sand and feet is less.

Hope I made it clear!

Yawar said:   10 years ago
B is correct as the friction between sand and feet is less so its correct.

Rohit bains said:   10 years ago
C is correct because more friction = less speed.

Rahul said:   1 decade ago
C is correct answer as in sand we have more contact area and more friction as compare to concrete road.

Abhishek said:   1 decade ago
Friction is inversely proportional to speed. Hence the answer should be 'c'.

Eswarara rao S said:   1 decade ago
Correct option is B. C given reverse which is incorrect.

Aishu said:   1 decade ago
Since concrete road is more leveled than that of sand, the contact area is more with the feet so that friction will be more. So can walk easily on concrete.

Saugat said:   1 decade ago
It is all about of friction. There is less friction between sand and feet by that the more time is needed to walk on sand so by that the magnitude of force get decrease so it difficult to walk on sand.

Rai said:   1 decade ago
Friction is required for walking, and friction between foot and sand is less than that of walking on concrete road so that it is easy to wake on concrete road than on sand.

Kriti said:   1 decade ago
Friction is responsible to hold the object in its place firmly. As there is more friction between concrete and feet it is more easy to walk on concrete than on muddy road. Hope its clear.


Post your comments here:

Your comments will be displayed after verification.