Can anyone help with these two? Thank you!

1) Two pendulums are displaced at an angle of 20 degrees and then released from rest. One pendulum has a mass of 1kg with a length of 50cm. The second one has a mass of 0.5kg with a length of 100cm. How would you find out which pendulum has a greater period AND how would you then calculate the period of that pendulum? Mass. 05 kg Length: 100 cm 2) There is a 0.60kg pendulum bob in the figure. When it goes through the equilibrium point, it has a speed of 1.69m/s. How much higher than the point shown is the turning_point of the motion? Max:060 kg Length: 80 cm - _