You observe an oscillating torsion pendulum, and you determine that its angular displacement is well-described by the following equation:
Īø(t) = A cos( Ļt)
where A = 0.5 radians is the amplitude and Ļ = 1.0 sā»Ā¹ is the angular frequency. What is the maximum angular speed of the torsion pendulum during its motion?