Friction HC Verma Solutions Que for Short Ans Ch-6 Vol-1

Friction HC Verma Solutions Concept of Physics Ch-6 Vol-1 for Class-11. Solution of Questions for short answer, with Numericals. Step by step Solutions of HC Verma Class-11 Ch-6 Friction Questions for short answer Volume- 1 (Concept of Physics). Visit official Website CISCE for detail information about ISC Board Class-11 Physics..

Friction HC Verma Solutions Que for Short Ans Ch-6 Vol-1 Class-11

Board ISC and other board
Publications Bharti Bhawan Publishers
Ch-6 Friction
Class 11
Vol  1st
writer H C Verma
Book Name Concept of Physics
Topics Solution of Questions for short answer
Page-Number 95,96

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Question for Short Answer (Currently Open)

Objective-I  

Objective-II  

Exercise  


Question for Short Answer

Friction HC Verma Solutions Concept of Physics Ch-6 Vol-1 Class-11

(Page-95)

Question-1 :-

For most of the surfaces used in daily life, the friction coefficient is less than 1. Is it always necessary that the friction coefficient is less than 1 ?

Answer-1 :-

It is not necessary that the friction coefficient is always less than 1. When the friction is stronger than the normal reaction force, the coefficient of friction is greater than 1. For example, silicon rubber has the coefficient of friction greater than 1.

Question-2 :-

Why is it easier to push a heavy block from behind than to press it on the top and push?

Answer-2 :-

Why is it easier to push a heavy block from behind than to press it on the top and push?

It is easier to push a heavy block from behind than from the top because when we try to push a heavy block from the top, we increase the normal reaction force, which, in turn, increases the friction between the object and the ground (see the figure).

Question-3 :-

What is the average friction force when a person has a usual 1 km walk?

Answer-3 :-

The person started with zero initial velocity, covered a 1 km distance and ended with zero velocity, so the acceleration is zero. Hence, the average friction force is zero.

Question-4 :-

Why is it difficult to walk on solid ice?

Answer-4 :-

It is difficult to walk on solid ice because the coefficient of friction between our foot and ice is very less; hence, a person trying to walk on solid ice may slip.

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