Shǐyòng gànggǎn shí, lìdiǎn de wèizhì juédìng le shěng lì de chéngdù.
When using a lever, the position of the effort point determines how much force is saved.
Tips
usage
力点 is used in physics/mechanics to mean the 'effort point' of a lever (where force is applied). It is also used more broadly in Chinese to mean a key focal area or emphasis - similar to 重点 in that extended sense.
