Homework Help: physics

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 ...
Linguistics - Determine whether the following are entailment, presupposition, or...
Linguistics - 1) (A) Mary murdered the platypus (B) Mary killed something Is the...
physics - Mary needs to row her boat across a 120 m -wide river that is flowing ...
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 ...
linguistics - For the following: (a) John is angry because Mary murdered the ...
Probability - Mary took a 20 question multiple-choice exam where there are 4 ...
economics - Suppose that two people, Mary and John each live alone in an ...

For Further Reading

First Name:
School Subject:
Answer: