mu mun asked 2/14/2011 A 75kg adult sits at one end of a 9.0m long board.His 25kg child sits on the other end.(a)Where should the pivot be placed so that the board is balanced,ignoring the board's mass?
mu mun asked 2/12/2011 (a)What is the angular momentum of a figure skater spinning at 3.5rev/s with arms in close to her body,assuming her to be a uniform cylinder with a height of 1.5m,radius of 15cm,and a mass of 55kg?
mu mun asked 2/11/2011 What is the angular momentum of a 0.210kg ball rotating on the end of thin string in a circle of radius 1.10m at angular speed of 10.4 rad/s?
