A mobile is made of identical objects of mass m suspended so that the lowest row has one object, the row above two objects, and the row above three objects. All the strings are at 45° angles. What is the average tension in the strings connecting the highest row to the ceiling? 
Definitions:
Supine
A posture in which an individual rests on their back, looking upwards, commonly employed during medical assessments or interventions.
Incentive Spirometer
A device used to help patients improve the functioning of their lungs by encouraging voluntary deep breathing.
Lung Expansion
A respiratory therapy technique aimed at increasing lung volume to improve oxygenation and prevent atelectasis.
Prophylactic Antibiotic
Antibiotics taken to prevent infections before they occur, especially in surgical procedures or after injuries.
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