Posted by **help** on Wednesday, October 27, 2010 at 10:57pm.

Mary and John are on opposite sides of a seesaw. Mary has 3x the mass of John. If Mary is sitting at a distance of .5m from the fulcrum, how far must John site in order to keep it balanced.

- physics -
**Henry**, Thursday, October 28, 2010 at 4:39pm
John's mass = x kg,

Mary's mass = 3x kg,

3x * 0.5 = x * d,

Solve for d by dividing both sides by x:

d = 3 * 0.5 = 1.5 m.

## Answer this Question

## Related Questions

Math - Find the ages of John and Mary if four times John's age equals three ...

math - Mary and John are 128 miles apart. A car leaves Mary traveling towards ...

Linguistics - Determine whether the following are entailment, presupposition, or...

Linguistics - 1) (A) Mary murdered the platypus (B) Mary killed something Is the...

Physics (Classical) - John and Mary are skating at an ice rink. John skates at a...

physics - John and Mary are skating at an ice rink. John skates at a constant ...

math - Two students, Mary and John, play a game. Each time Mary passes “start” ...

Algebra 2 - two people, john and mary, are 200 miles apart and leave at the same...

Simple Math Question - two people, john and mary, are 200 miles apart and leave ...

math - john and mary are working on a job together. if john does it alone, it ...