Please answer now, i will give brainy award A pendulum, as shown below, has a mass of 1 kg and starts its swing from rest at position
A. The pendulum swings past the lowest point B up to point C, which is at the same height
as point A. Points A and C are 0,866 m apart and BC is 0,5m

11.1) Define the term 'kinetic energy'.

11.2) Calculate the gravitational potential energy of the pendulum at point A.
(5)

11.3)calculate the maxim speed that the pendulum will reach.
(4)

11.4) By referring to the law of conservation of mechanical energy, explain how the
maximum velocity will change if the height is increased four times.
(2)