A 5-Kg Mass with Initial Velocity 20 M/s Slides Along $\mu$

question 41

Multiple Choice

A 5-kg mass with initial velocity 20 m/s slides along a frictionless horizontal surface then up a frictionless ramp (2 m long and at an angle 30 degrees to the horizontal) and onto a second horizontal surface. The block slides over a rough surface 15 m in length ( $\mu$ _k = 0.4) before moving again on a frictionless surface and then impacting upon an uncompressed spring. If the block compresses the spring a distance 2 m, what is the spring constant k for the spring?

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Definitions:

Id

A component of the personality in Freud's psychoanalytic theory that is responsible for the instinctual and primitive behaviors.

Ego

In psychology, a part of the mind that mediates between conscious and unconscious thoughts, often tied to one's sense of self-esteem and identity.

Oedipus Complex

A psychoanalytic theory proposed by Freud that describes a child's feelings of desire for the opposite-sex parent and jealousy and rivalry with the same-sex parent.

Impulsiveness

A tendency to act on spontaneous desires without considering the consequences.