In the Laboratory,a Stick 1 M Long Is Pivoted at Various

question 65

Multiple Choice

In the laboratory,a stick 1 m long is pivoted at various points to illustrate the motion of a physical pendulum.A plot of the period versus the distance of the pivot point from the center of mass is shown.The data presented demonstrate which of the following?

• A)The motion of a pendulum is circular about the center of mass.
• B)The center of mass is at 0.4 m.
• C)The graph is meaningless in this form.
• D)There is a minimum period in the neighborhood of 1.5 s at a pivotal distance of approximately 0.4 m from the center of mass.
• E)The graph should be drawn as a straight line from A to C; point D is obviously wrong.

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Definitions:

Neural Tube Defect

A type of birth defect affecting the brain, spine, or spinal cord, occurring in the early stages of pregnancy due to the neural tube not closing completely.

Folic Acid

A form of vitamin B9 that is essential for the production of healthy red blood cells and is particularly important during periods of rapid growth such as pregnancy.

Supplement

A product taken orally that contains one or more ingredients (such as vitamins or amino acids) that are intended to supplement one's diet and are not considered food.

Neural Tube Defects

Birth defects of the brain, spine, or spinal cord that occur when the neural tube does not close completely during early fetal development.