Determine the angular speed.?

Question

A pendulum creates an angle, in degrees, with the vertical based on the equation: Ө=30sin(πx). Determine the angular speed of the pendulum at x=1 (second).

Answer 1

Ө=30sin(πx).

Calculate angularspeed using

ω=dӨ/dx

   =30πcos(πx)

At x=1 sec

ω=30πcos(π(1))

   =-30π rad/s