A Uniform Plank XY Is Supported by Two Equal 120-N

question 1

Multiple Choice

A uniform plank XY is supported by two equal 120-N forces at X and Y, as shown.The support at X is then moved to Z (half-way to the plank center) .The supporting forces at Y and Z are then:

• A)F_Y = 240 N, F_Z = 120 N
• B)F_Y = 200 N, F_Z = 40 N
• C)F_Y = 40 N, F_Z = 200 N
• D)F_Y = 80 N, F_Z = 160 N
• E)F_Y = 160 N, F_Z = 80 N

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Definitions:

Stimulus Discrimination

The ability to distinguish between different stimuli, particularly in learning and behavioral contexts.

Selective Retention

The process by which individuals remember only the information that supports their beliefs or opinions, ignoring any contrary evidence.

Selective Analysis

A method of analyzing data or information where only certain aspects or variables are considered, often to support a specific hypothesis or outcome.

Subliminal Perception

The processing of information by the brain that occurs below the level of conscious awareness.