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Two Children Are Carrying a 2

question 8

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Two children are carrying a 2.00-m long uniform level board with a mass 5.00 kg, each supporting one end of the board. A 1.00-kg book is resting on the board a distance 1.20 m from one end of the board. What is the force applied by the child that is closer to the book to support the board?


Definitions:

Reflex Arc

The neural pathway that controls a reflex action, including at least one sensory neuron and one motor neuron, creating an automatic response to a stimulus.

Receptor

A protein molecule that receives and responds to chemical signals from hormones, neurotransmitters, or other stimuli outside the cell.

Vestibulocochlear

Pertaining to the vestibulocochlear nerve, the eighth cranial nerve, which is responsible for transmitting sound and equilibrium (balance) information from the inner ear to the brain.

Accessory

Relating to additional or auxiliary components or structures, often used to describe nerves or muscles that supplement a primary function.

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