Olá, @alexandrebatista6632
Resolução:
A velocidade angular do objeto:
[tex]\omega=2 \pi.f\\\\\\\omega=2 \pi.\bigg(\dfrac{n\ de\ Voltas}{\Delta t}\bigg)\\\\\\\omega=2 \pi.\bigg(\dfrac{10}{5}\bigg)\\\\\\\omega=\pi.2^2\\\\\\\boxed{\omega=4\pi\ rad/s}[/tex]
Bons estudos! =)