A thin uniform rod $($mass $\backslash (=0\mathrm{.}67\backslash$mathrm$\{$~kg$\}\backslash ))$ swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. The rod swings with a period of $1\mathrm{.}4$ s and an angular amplitude of $\backslash (7\mathrm{.}8^\{\backslash$circ$\}\backslash ).($a$)$ What is the length of the rod? $($a$)$ What is the maximum kinetic energy of the rod as it swings?

$($a$)$ Number Units

$($b$)$ Number

i

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