Upgrade to access all content for this subject

Created for Albert.io. Copyright 2016. All rights reserved.

A small block moves along a frictionless track, as shown in the figure above.

What is the minimum speed the block must have at the bottom of the circular loop such that it completes the loop?

$ \sqrt {gR} $

$ \sqrt {2gR} $

$ \sqrt {3gR} $

$ \sqrt {4 gR} $

$ \sqrt {5gR} $