physics

posted by .

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 -

    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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2

    two people, john and mary, are 200 miles apart and leave at the same time to meet. They are driving toward each other at constant rate on the same straight road. John is traveling at 45 mph and Mary is traveling at 35 mph. When they …
  2. Simple Math Question

    two people, john and mary, are 200 miles apart and leave at the same time to meet. They are driving toward each other at constant rate on the same straight road. John is traveling at 45 mph and Mary is traveling at 35 mph. When they …
  3. Linguistics

    Determine whether the following are entailment, presupposition, or both. 1) (A) Mary murdered the platypus (B) Mary killed something Is the answer: (a) entails (b) OR (a) presupposes (b) OR both 2) (A) John is taller than Mary (B) …
  4. Linguistics

    1) (A) Mary murdered the platypus (B) Mary killed something Is the answer: (a) entails (b) OR (a) presupposes (b) OR both 2) (A) John is taller than Mary (B) Mary is shorter than John Is the answer: (a) entails (b) OR (a) presupposes …
  5. Math

    Find the ages of John and Mary if four times John's age equals three times Mary's age, and Mary is ten years older than John.
  6. math

    Two students, Mary and John, play a game. Each time Mary passes “start” she received $25. Each time John passes “start” he receives 15% of the amount he already has. Both students start with $200. a. How much money will Mary …
  7. Physics (Classical)

    John and Mary are skating at an ice rink. John skates at a constant speed of 6.7 m/s, with respect to the ice surface, directly south. Mary skates at a constant speed of 11.5 m/s in a direction of 34° west of south, with respect to …
  8. physics

    John and Mary are skating at an ice rink. John skates at a constant speed of 6.7 m/s, with respect to the ice surface, directly south. Mary skates at a constant speed of 11.5 m/s in a direction of 34° west of south, with respect to …
  9. math

    Mary and John are 128 miles apart. A car leaves Mary traveling towards John and another car leaves John at the same time traveling towards Mary. The car leaving Mary averages 10 miles per hour more than the other car and they meet …
  10. math

    there are 15 students including john and mary, in the art club of a school a committee of 3 men consists of chairman secretary and treasurer is selected from the club. if john and mary cannot be both selected how many different committees …

More Similar Questions