AP EAMCET202017 Sep 2020Evening ShiftPhysicsLaws of MotionActual
In a circus, a stuntman rides a motor bike in a vertical circular track of radius (r ). Find the minimum speed, he must maintain at highest point of track.
Options
- A( 2 g r )
- B(2 g r )
- C( g r )
- D( 5 g r )
Correct answer
C. ( g r )
Step-by-step solution
For motion in vertical circle, to complete the revolution of moving body, the minimum speed of body at lowest point and highest point should be ( 5 g r ) and ( g r ) respectively, where (r ) is the radius of circular path. Hence, in circus, for completing vertical circular track, minimum speed of stuntman at highest point of track should be ( g r ).