BITSAT2023PhysicsRotational MotionActual
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
Options
- AR ( ^2+4 )
- BR ( ^2+1 )
- C2 R
- D2 R (1+4 ^2 )
Correct answer
A. R ( ^2+4 )
Step-by-step solution
(a) From figure, Displacement, BA = (2 R )^2+( R )^2 = R 4+ ^2