document.write( "Question 1171810: An object is attached to a coiled spring. The object is pulled down (negative direction from the rest position) 2 centimeters, and then released. Write an equation for the distance d of the object from its rest position, after t seconds if the amplitude is 2 centimeters and the period is 6 seconds. \n" ); document.write( "

Algebra.Com's Answer #796755 by htmentor(1343) $\"\"$ $\"About$

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The initial position is the maximum displacement of -2 cm, since the positive
\n" ); document.write( "direction is up. The object oscillates back and forth between d = -2
\n" ); document.write( "and d = 2 cm. Since the period is 6 s, the angular velocity,
\n" ); document.write( "w = 2*pi/T = pi/3.
\n" ); document.write( "Thus, the distance d is described by: d(t) = -2cos(wt) = -2cos(pi/3*t)
\n" ); document.write( "The graph is shown below:
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