The Period of a Pendulum Is the Time It Takes

question 46

Multiple Choice

The period of a pendulum is the time it takes the pendulum to swing back and forth once. If the only dimensional quantities that the period depends on are the acceleration of gravity, g, and the length of the pendulum, L, what combination of g and L must the period be proportional to? Acceleration has dimensions of [L][T^-2].

• A)g/L
• B)gL²
• C)gL

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Definitions:

Continents

Large, continuous areas of land on Earth, of which there are conventionally seven.

Landscape

The visible features of an area of land, including physical elements such as landforms, living elements, and human elements like structures.

Granite

A coarse-grained, felsic igneous rock containing mostly feldspar and quartz.

Continental Crust

The thick, generally granitic layer of the earth's crust that forms the continents and continental shelves, distinct from the denser, basaltic oceanic crust.