Q5: A 4 kg block is attached to a vertical rod by means of two strings of equal length. When the system rotates about the axis of the rod, the strings are extended as shown in figure. a) How many revolutions per minute must the system make in order for the tension in the upper cord to be 20 kg? b) What is the tension in the lower cord then?
Q5: A 4 kg block is attached to a vertical rod by means of two strings of equal length. When the system rotates about the axis of the rod, the strings are extended as shown in figure. a) How many revolutions per minute must the system make in order for the tension in the upper cord to be 20 kg? b) What is the tension in the lower cord then?
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotation Of A Rigid Object About A Fixed Axis
Section: Chapter Questions
Problem 48CP: A cord is wrapped around a pulley that is shaped like a disk of mass m and radius r. The cords free...
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