physics

posted by .

Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law of gravity. Calculate the maximum force exerted on the baby by the planet Mars and compare that with the force of gravity exerted by the mass of the doctor's head as she delivers the baby. Assume Mars is at its closest approach to Earth at the time. You will need to estimate the mass of a newborn, as well as the mass and distance between the doctor's head and the baby.


1) Determine the distance from the Earth to Mars in meters

2) Calculate the maximum force exerted on the baby by the mass of the doctor's head as she delivers the baby.

3) Calculate the maximum force exerted on the baby by the planet Mars.

  • physics -

    You have posted this once and received two responses. Posting again won't get anymore help until you've followed Bob P's advice and followed 1-6 of the instructions.

  • physics -

    i did try to but i still didn't understand it that's why i reposted it

  • physics -

    You have to make some assumptions to come up with numbers. First of all, the closest possible approach of Mars to the Earth is 35 million miles or, 5.63*10^10 meters. That is explained at
    http://cseligman.com/text/planets/marsoppositions.htm

    You need the mass of Mars. That is 6.42*10^23 kg.

    Assume the doctor's head mass is 4 kg and the baby's mass is 4kg, and the separation of the doctor's head is 0.5 meter during delivery.

    You will have to look up the value of Newton's universal gravity constant G and crank out some numbers to get the actual forces. The ratio of the doctor's head force to the Mars force will be
    (4/6.42*10^23)*(5.63*10^10/0.5)^2 = 0.079

    So the gravitational influence of Mars is greater than that of the doctor in this situation, but that does not prove astrology has an important influence.

  • physics -

    thank you!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law …
  2. physics

    Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law …
  3. physics

    One of the tenets of the pseudoscience (i.e., "false science") of astrology is that, in some mysterious way, the positions of the planets at the time of a person's birth somehow influence the characteristics of that person. To see …
  4. phi 103

    1. Logic can help analyze ethical problems. (Points : 1) True False 2. Putting an argument into premise-conclusion form can make it easier to (Points : 1) ignore the argument. think the argument is pretty. evaluate the argument. avoid …
  5. Statistics

    A study conducted by an airline showed that a random sample of nine of its passengers disembarking at the Cleveland airport, took an average of 24.1 minutes to claim their luggage. From a previous survey it was willing to assume that …
  6. Science

    Astrologers relate the location of stars and planets to events in human lives. Many years ago, people classified astrology as a science. Why do modern scientists consider astrology to be a pseudoscience A. Astrology does not involve …
  7. Physics

    Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of one’s birth. The only known force a planet exerts on objects on Earth is gravitational. (a) Calculate the gravitational …
  8. Language Arts

    In "Life Without Gravity," the author provides many ideas and details about living in microgravity. What do you consider the most important idea in "Life Without Gravity"?
  9. language arts

    Please help!!!! I don't need the answer, i just need help understanding this. In "Life Without Gravity," the author provides many ideas and details about living in microgravity. What do you consider the most important idea in "Life …
  10. Physics

    Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of birth. The only known force a planet exerts on earth is gravitational. (a) Calculate the gravitational force exerted on a …

More Similar Questions