1 \begin{problem*}{12.12}
2 A $1.00\U{kg}$ glider attached to a spring with a force constant of
3 $25.0\U{N/m}$ oscillates on a horizontal, frictionless air track. At
4 $t=0$, the glider is released from rest at $x=-3.00\U{cm}$ (that is,
5 the spring is compressed by $3.00\U{cm}$). Find \Part{a} the period
6 of its motion, \Part{b} the maximum values of its speed and
7 acceleration, and \Part{c} the position, velocity, and acceleration as
14 \omega = \sqrt{\frac{k}{m}} = \ans{5.00\U{N/m}} \;,
18 T = \frac{1}{f} = \frac{2\pi}{\omega} = \ans{1.26\U{s}} \;.
22 The maximum speed of the object is (see 12.5)
24 v_\text{max} = \omega A = \ans{15.0\U{cm/s}} \;,
26 where $A = 3.00\U{cm}$.
28 The maximum acceleration of the object is (see 12.5)
30 a_\text{max} = \omega^2 A = \ans{75.0\U{cm/s$^2$}} \;.
34 The position starts at the minimum value of $x$, so a $-\cos$ based
35 expression for $x$ is in order
37 x &= -A \cos(\omega t) = -A \cos(\omega t) \\
38 v &= \omega A\sin(\omega t) = v_\text{max} \sin(\omega t) \\
39 a &= \omega^2 A\cos(\omega t) = a_\text{max} \cos(\omega t) \;.