Abstract��Simple pendulum and free fall experimental instrument are used for measuring the acceleration of gravity. In the simple pendulum experiment, the origin and establishing conditions of cycle formula are stated systematically. In the free fall experiment, Timing method by two optical switch is used and the result is satisfactory. The results of the two different experiments validate each other very well.
�ܼ��٣� �����. �ⶨ�������ٶȵ����ַ���[J]. �й������ڿ���, 2014, 32(3): 25-27.
ZHOU Ji-lei, WANG Yan-feng. Two Methods for Measuring Gravitational Acceleration. Chinese Journal of Iron and Steel, 2014, 32(3): 25-27.
2014, Vol. 32 
