The Figure Shows a System Consisting of Three Blocks, a Light

question 114

Short Answer

The figure shows a system consisting of three blocks, a light frictionless pulley, and light
connecting ropes that act horizontally on the upper two blocks. The 9.0-kg block is on a
perfectly smooth horizontal table. The surfaces of the 12-kg block are rough, with µk =
0.30 between the 12-kg and 9.0-kg blocks. The mass M of the hanging block is set so that it
descends at a constant velocity of 3.25 m/s.
(a) What is the mass M of the hanging block?
(b) The mass M is now changed to 5.0 kg, causing it to accelerate downward after it is
released. What is the acceleration of the hanging mass?

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Definitions:

Prejudice

Preconceived opinions or judgments towards people or groups without sufficient knowledge, often based on stereotypes.

Hostility

A complex mix of emotions and behaviors that expresses opposition, anger, or aggression toward others.

Harold Kelley

a social psychologist known for his contributions to attribution theory, which explains how individuals infer the causes of other people's behavior.

Consensus Information

Information or belief that is widely accepted and agreed upon by a majority of members within a particular group or community.