You are presented with the question "An object that can be used for measuring mass of an object is similar to what playground item?" and the following answer choices: 
- forces
 - Slide
 - barrel
 - Seesaw
 - Merry-go-round
 - rockets
 - Monkey bars
 - matter

Now knowing that abalance is used for measuring mass of an object and beam balances, like a seesaw, measure an unknown mass by comparison to known masses, choose the best answer.


 

    Seesaw     