Question

A child is playing in a park on a rotating cylinder of radius, r, is set in rotation at an angular speed of ω as shown below. The base of the cylinder is slowly moved away, leasing the child suspended against the wall in a vertical position. What is the minimum coefficient of friction between the child’s clothing and wall is needed to prevent it from falling

Answer 1

mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density.