Posted by **Anonymous** on Monday, December 6, 2010 at 11:12am.

A spring stretches 4.3 cm when a 13 g object is hung from it. The object is replaced with a block of mass 22 g that oscillates in simple harmonic motion, calculate the period of motion.

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**drwls**, Monday, December 6, 2010 at 12:05pm
Period = 2*pi*sqrt(m/k)

k is the spring constant in Newtons/meter.

k = x*g/(deflection)

Use SI units (kg, m, seconds, and N/m), or else k must be in dynes/cm.

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