noun
: an ideal pendulum consisting of a point mass suspended by a weightless inextensible perfectly flexible thread and free to vibrate without friction — distinguished from physical pendulum
noun
: an ideal pendulum consisting of a point mass suspended by a weightless inextensible perfectly flexible thread and free to vibrate without friction — distinguished from physical pendulum
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012