A 20-Kg Mass Is Attached to One End of a Spring

question 28

Multiple Choice

A 2.0-kg mass is attached to one end of a spring with a spring constant of 100 N/m and a 4.0-kg mass is attached to the other end.The masses are placed on a horizontal surface and the spring is compressed 10 cm.The spring is then released with the masses at rest and the masses oscillate.When the spring has its equilibrium length for the first time the 2.0-kg mass has a speed of 0.36 m/s.The mechanical energy that has been lost to this instant is:

• A)0 J
• B)0.31 J
• C)0.61 J
• D)0.81 J
• E)1.2 J

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Definitions:

Voluntarism

Voluntarism is the principle that emphasizes the importance of individual will or voluntary actions in the determination of social or political outcomes.

Free Rider Problem

A situation in which some individuals benefit from resources or services without paying their fair share of the costs, leading to undersupply or overuse.

Insurance Scheme

A system or plan that provides financial protection against certain risks, such as illnesses or accidents, typically through the collection of premiums.

Adverse Selection

A situation in which one party in a transaction has more or better information than the other, often leading to imbalances and inefficiencies in markets, especially insurance.