The Work $\overrightarrow{\mathbf{F}}_{s p} \cdot d \overrightarrow{\mathbf{x}}$ Done by the Force Exerted by the Spring on a Force

question 35

Multiple Choice

The work $\overrightarrow{\mathbf{F}}_{s p} \cdot d \overrightarrow{\mathbf{x}}$ done by the force exerted by the spring on a mass attached to the end of the spring when the mass has displacement d $\overrightarrow{\mathbf{x}}$ is

• A)always negative.
• B)always positive.
• C)negative half the time, positive the other half of the time.
• D)positive more than it is negative.
• E)negative more than it is positive.

---

Definitions:

Efficiency Wage Rate

A wage rate set above the market-clearing level by employers to boost worker productivity, discourage shirking, and reduce turnover.

Wage Rigidity

Wage rigidity refers to the phenomenon where wages do not adjust quickly or easily to changes in labor market conditions, often due to contracts, norms, or regulations.

No Shirking Constraint

An economic principle suggesting that wages must be set at a level that discourages employees from shirking their duties.

Supply of Labor Curve

A graphical representation showing the relationship between the wage rate and the quantity of labor that workers are willing to supply.