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 2 of 4.

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

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.

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

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

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!

Elakiya jyothi said:   9 years ago
What is mean by lithology?

Neeharika said:   9 years ago
I think option c is correct because friction is more when we walk on sand than on the conrete road.

Anup khadka said:   9 years ago
I think option B is correct because when friction is less than one will feel quite hard to walk like in a slippery way the friction will be less between our feet and path which may make us fall down.

So option B is correct guys.

Jayesh Nair said:   9 years ago
The reaction of a hard floor on the feet is much more than that applied by the sand on the feet. A part of the action by the feet on the sand is dissipated within the sand particles due to the lower friction within the particles as compared to the layers of hard surface.

Bibek said:   9 years ago
Answer Should be "C".

Because Friction is more in the case of the sandy road than the concrete road.


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