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
An Introduction to Physical Science
14th Edition
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter2: Motion
Section2.3: Acceleration
Problem 2.3CE: What is the average speed in mi/h of a person at the equator as a result of the Earths rotation?...
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