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 |
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 |
(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