In the Figure,the Horizontal Lower Arm Has a Mass of 2.8

question 990

Multiple Choice

In the figure,the horizontal lower arm has a mass of 2.8 kg and its center of gravity is 12 cm from the elbow joint pivot.How much force F_M must the vertical extensor muscle in the upper arm exert on the lower arm to hold a 7.5 kg shot put?

• A) 100 N
• B) 500 N
• C) 750 N
• D) 1000 N
• E) 1500 N

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Definitions:

Desired Response

The preferred or intended outcome or reaction to a specific stimulus or set of circumstances.

Intermittent Reinforcement

A conditioning schedule where rewards or punishments are given out irregularly, which can strengthen behavior.

Learned Helplessness

A condition in which a person suffers from a sense of powerlessness, arising from a traumatic event or persistent failure to succeed.

Generalization

The process of applying the findings or conclusions from specific instances to broader contexts or populations.