A small block of mass 1.26 kg slides without friction on a horizontal table. Initially it moves in a circle of radius R = 0.6 m with a speed 1.5 m/s. It is held in its path by a string that passes through a small hole at the center of the circle. The string is then pulled down a distance of 0.12 m.( Ro - R = 0.12 m.) It is pulled so slowly that the object continues to move in a circle of continually decreasing radius. 1) While the string in pulling in the block, which of the following qualities of the block is conserved (circle all that are correct): a) Rotational kinetic energy b) Angular momentum c) Linear momentum d) Mechanical energy e) None of the above √2) What is the final linear speed of the block (in m/sec)? 1.8 m/sec. (3) How much work was done by the force that pulled on the string? 0.915

A small block of mass 1.26 kg slides without friction on a horizontal table. Initially it moves in a circle of radius R = 0.6 m with a speed 1.5 m/s. It is held in its path by a string that passes through a small hole at the center of the circle. The string is then pulled down a distance of 0.12 m.( Ro - R = 0.12 m.) It is pulled so slowly that the object continues to move in a circle of continually decreasing radius. 1) While the string in pulling in the block, which of the following qualities of the block is conserved (circle all that are correct): a) Rotational kinetic energy b) Angular momentum c) Linear momentum d) Mechanical energy e) None of the above √2) What is the final linear speed of the block (in m/sec)? 1.8 m/sec. (3) How much work was done by the force that pulled on the string? 0.915

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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