$36.$ A simple harmonic oscillator is made from a spring $($spring constant k $=153\mathrm{.}0$ N$/$m$)$ and a $15\mathrm{.}2$ kg

block with an amplitude of $8\mathrm{.}25$ cm$.$

$($a$)$ What is the block's velocity when it is $4\mathrm{.}42$ cm from the equilibrium position?

Hints: $=22$; you will calculate W using $$T$$ as W $=2($pi$)/$T; Calculate Time period $($T$)$ using

the formula, $=2$

$,$