An example of a logical appeal is encouraging someone to quit smoking because of the noted health risks associated with smoking tobacco. Essentially, a logical appeal is used to convince someone a generally accepted truth is valid. Logical appeals are harder to dispute than other kinds of appeals, such as emotional appeals and ethical appeals, because they are a result of facts rather than feelings or opinions.
A logical appeal has three components: a claim, evidence and a warrant. Claims are something a person believes is a reality, and a logical appeal is used to convince another person that the claim is a fact. An example of a claim is the belief that exercise makes people healthier.
After presenting a claim, evidence is used to convince a person to believe the claim. Since logical appeals appeal to logic, only solid facts are used for evidence. Examples include well-known facts, academic research, medical data and statistics. Regardless of what kind of evidence is presented, it has to be indisputable.
Lastly, a warrant is used to connect the claim to the evidence. Most warrants highlight a benefit to the claim. For example, quitting smoking improves a person's health and saves a lot of money since cigarettes are expensive.