Question

Q.9 Statement I: It is convenient to pull luggage fitted with rollers.
Statement II : Rolling friction is smaller than sliding friction.
a. Both statements I and II are true, Statement II is the correct explanation for
statement
b. Both statements I and II are true, Statement ll is not the correct explanation for
statement
c. Statement is true and statement Il is false.
O d. Statement is false and statement ii is true.​

Answer 1

Answer:-

(a) is the correct answer.

Reason:-

We know that rolling friction is always smaller than other type of frictions which include sliding friction. This is because as we know that more friction is directly proportional to the area of contact i.e. more the area of contact, the more is the friction. Now we kbow that in rolling friction there is the least contact made with the surface. But in sliding friction, maximum contact is made with the surface cause the friction at most.