A Metal Bar Is Hanging from a Hook in the Ceiling

question 108

Multiple Choice

A metal bar is hanging from a hook in the ceiling when it is suddenly struck by a ball that is moving horizontally (see figure) . The ball is covered with glue, so it sticks to the bar. During this collision

• A) the angular momentum of the system (ball and bar) is conserved about the hook because only gravity is acting on the system.
• B) the angular momentum of the system (ball and bar) is not conserved because the hook exerts a force on the bar.
• C) the angular momentum of the system (ball and bar) is conserved about the hook because neither the hook nor gravity exerts any torque on this system about the hook.
• D) both the angular momentum of the system (ball and bar) and its kinetic energy are conserved.
• E) both the linear momentum and the angular momentum of the system (ball and bar) are conserved.

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Definitions:

Transference

In psychoanalysis, the projection of feelings, expectations, or desires from one individual onto another, often occurring in therapeutic settings between patients and therapists.

Psychoanalyst

A professional trained in psychoanalysis, a therapeutic approach that focuses on exploring the unconscious mind's impact on behavior and thought.

Unconditional Positive Regard

Unconditional Positive Regard is an attitude of total acceptance and support towards another person, regardless of what they say or do, often used in client-centered therapy.

Client-Centred Therapy

A form of psychotherapy developed by Carl Rogers that emphasizes providing a supportive environment where clients can enhance their self-understanding.