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.

Question

Quizplus · Accepted Answer

The Answer of 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.

The Work F→sp⋅dx→\overrightarrow{\mathbf{F}}_{s p} \cdot d \overrightarrow{\mathbf{x}}Fsp​⋅dx Done by the Force Exerted by the Spring on a Force

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