The angular speed of a rotating platform changes from $0=4\mathrm{.}8$ rad$/$s to $=7\mathrm{.}8$ rad$/$s at a constant rate as the platform moves through an angle $$ $=2\mathrm{.}5$ radians. The platform has a radius of R $=46$ cm$.$

Randomized Variables

$0=4\mathrm{.}8$ rad$/$s

$=7\mathrm{.}8$ rad$/$s

$$ $=2\mathrm{.}5$ radians

R $=46$ cm

ala$128$@txstate.edu$5$T$88-89-$C$9-4$F$-83$F$5-54425$

$-$ Part $($a$)$

Calculate the angular acceleration of the platform in rad$/$s$2.$

$=7\mathrm{.}5607\mathrm{.}560$Correct$!$

$-$ Part $($b$)$

Calculate the tangential acceleration at in m$/$s$2$ of a point on the surface of the platform at the outer edge.

at $=3\mathrm{.}4783\mathrm{.}478$Correct$!$

$$ Part $($c$)$

Calculate the final centripetal acceleration ac$,$ in m$/$s$2,$ of a point at the outer edge of the platform $.$