A person of $55\mathrm{.}0$ kg sits on the left end of a see$-$ saw, a uniform plank of length $4\mathrm{.}00$ m that is pivoted at the center. Where should a $2$nd person of $75\mathrm{.}0$ kg sit if the system, seesaw and both people, is to be balanced?

Answer rating: 100% (QA)

To balance the system we need to find the location of the second person such that the sum of the mom... View the full answer