How does a 3rd class lever make things easier?

What is the lowest frequency of the electromagnetic spectrum? What is a longitudinal axis for a bone? Why does melting ice cause the liquid to stay the same and what does it have to do with Archimedes' Principle? Is there any limitation on semivertical angle in conical pendulum? Why does mixing equal amounts of red green and blue light rays produce white light but mixing paints that have the same colors produce black paint? What is a ametre? What is the palindrome for a method of finding the position of a solid object by sending out a pulse of high frequency radio waves? What does the linear speed of a rotating object depend on? Does light energy produce vibration? What do our bodies constantly do with the heat we have stored inside us? What is one key difference between radiation and convection zones? What type of enery does the wrecking ball use to destroy the walls? How many raviolis in one cup? How does the yo-yo work? What is frequency of a vibrating body whose time period is 0.3 second? What energies can thermal energy transfer into? What type of motion is exhibited by a ball thrown up uniform or non uniform motion why? What is used in making atomic clocks that lose one second every 300 years? What is defined as power per unit area? Is the purpose of an experiment to test the hypothesis?

How does a 3rd class lever make things easier?