A disc is rolling without slipping on a surface. The radius of the disc is R. At t = 0, the top most point on the disc is A as shown in figure. When the disc completes half of its rotation, the displacement of point A from its initial position is
A
2R
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The displacement is the hypotenuse of the diameter and the distance travelled for half the rotation 
R.
By using Pythagoras theorem,
Displacement of 
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