In a circus, a stuntman rides a motor bike in a vertical circular track of radius \(r\). Find the minimum…
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.
\(\sqrt{2 g r}\)
\(2 \sqrt{g r}\)
\(\sqrt{g r}\)
\(\sqrt{5 g r}\)
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 \(\sqrt{5 g r}\) and \(\sqrt{g r}\) 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 \(\sqrt{g r}\).