A Small but Dense 2

question 49

Multiple Choice

A small but dense 2.0-kg stone is attached to one end of a very light rod that is 1.2 m long.The other end of the rod is attached to a frictionless pivot.The rod is raised until it is vertical,with the stone above the pivot.The rod is released and the stone moves in a vertical circle with no air resistance.What is the force that the rod exerts on the stone as the stone moves through the bottom of the circle?

• A)20 N
• B)40 N
• C)60 N
• D)80 N
• E)100 N

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Definitions:

Inner Ear

The innermost part of the ear, containing the cochlea, vestibule, and semicircular canals, crucial for hearing and balance.

Receptors

Specialized cells or proteins in the body that bind to specific molecules like neurotransmitters, hormones, or drugs, triggering a physiological response.

Muscles

Tissues in the body that have the ability to contract, thus enabling movement and support of various body functions.

Joints

The locations at which two or more bones connect, facilitating movement and providing support to the skeletal structure.