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Statement 1:

A disc is allowed to roll purely on an inclined plane as shown in Figure. A force parallel to the incline and passing through the centre of the disc acts which remains constant during the motion

It is possible that for certain values of  the friction on the disc is acting along downward direction and for certain other values of, the friction on the disc be acting along upward direction and there is no other possibility

Statement 2:

The friction(if acting )will be static will be static and not kinetic in nature



Question ID - 100903 | SaraNextGen Top Answer

Statement 1:

A disc is allowed to roll purely on an inclined plane as shown in Figure. A force parallel to the incline and passing through the centre of the disc acts which remains constant during the motion

It is possible that for certain values of  the friction on the disc is acting along downward direction and for certain other values of, the friction on the disc be acting along upward direction and there is no other possibility

Statement 2:

The friction(if acting )will be static will be static and not kinetic in nature

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

If , then friction on disc will be in downward direction and if , then friction on disc will be in upward direction. If , then no friction will act on disc. Hence, statement I is false

Statement II is true because in pure rolling, friction can be either static or no friction

127 votes


127