A small block with a mass of 0.190 is attached to a cord passing through a hole in a frictionless, horizontal surface (the figure ). The block is originally revolving at a distance of 0.50 from the hole with a speed of 0.90 . The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.15 . At this new distance, the speed of the block is observed to be 3.00 . How much work was done by the person who pulled on the cord?
Are you overwhelmed by an intense schedule and facing difficulties completing this assignment? We at GrandHomework know how to assist students in the most effective and cheap way possible. To be sure of this, place an order and enjoy the best grades that you deserve!Post Homework