A long smooth cylindrical pipe of radius r is tilted at an angle `alpha` to the horizotal (Fig). A
Channel: Doubtnut
Date: 2020-08-23

A long smooth cylindrical pipe of radius r is tilted at an angle `alpha` to the horizotal (Fig). A small body at point A is pushed upwards along the inner surface of the pipe so that the direction of its initial velocity forms an angle `varphi` with generatrix AB. Determine the minimum initial velocity `v_(0)` at which the body starts moving upwards without being separated from the surface of the pipe. img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/SSK_ATP_PHY_C01_E01_066_Q01.png" width="80%"