A spring with a mass of 
kg has damping constant 28 and spring constant 
Find the damping constant that would produce critical damping.
Definitions:
Purely Competitive Firm
A company that operates in a market where there are many buyers and sellers, none of which can influence market prices significantly.
Long Run
A period of time during which all factors of production and costs are variable, in contrast to the short run where some are fixed.
Market Supply
The total amount of a product or service that is available to consumers, determined by the sum of all individual suppliers' outputs in the market.
Decreasing-cost Industry
An industry that experiences lower production costs as the industry output expands, often due to economies of scale.
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