Question

NCERT VIII - Sciences

Four children were asked to arrange forces due to rolling, static and sliding frictions in adecreasing order. Their arrangements are given below. Choose the correct arrangement.

(a) rolling, static, sliding
(b) rolling, sliding, static
(c) static, sliding, rolling
(d) sliding, static, rolling

Answer 1

the correct option is (c)
[static,sliding,rolling]

Answer 2

Static friction is always the highest. Sliding friction is slightly lower than the static friction. Rolling friction is the smallest of all. Its value depends on the shape of the object.

So the answer is (c) static > sliding > rolling