In this animation you can see how a pendulum behaves in different initial conditions (length of the rope, angle). The mass is fixed to 1 Kg, because the period doesn't depend on it, whereas it does depend on the length of the rope, but not on the initial angle. You can also visualize the vectors of tension, velocity and acceleration, and their components. Probably there is no need to show Tx and Ty but I just put them there for completeness.
Enjoy!