Definition & Meaning of "a fair crack of the whip"in English

What is the origin of the idiom "a fair crack of the whip" and when to use it?

The phrase "a fair crack of the whip" is believed to have originated in the 19th century and has its roots in horse racing and equestrian culture. In horse racing, jockeys use whips to encourage horses to run faster and perform at their best. It implies that each participant in a race should receive an equal and fair opportunity to utilize the whip and apply it to their horse, without any unfair advantage or disadvantage. It is commonly used in discussions related to competition, sports, and games, highlighting the importance of a level playing field and equal chances for all participants to succeed.