Why does gravity attract non-metallic objects as magnetism does? I understand why gravity, because of mass of an object, works. But earth has a magnetic field, and the moon does not. Indeed, many masses in the universe do not exhibit magnetic fields. If magnetic field plays a part, why does wood on non-metallic (magnetically charged) objects fall at the same speed, especially when we have physics that indicate when a mass (e.g. earth) in orbit should fall into the law of centrifugal force. If the earth is pulled (I say pushed by other heavenly bodies) by gravity to prevent centrifugal force onto the earth. Why should centrifugal force act on non-metallic objects. There appears to be a contradiction that is unexplainable. Help me understand.
closed as unclear what you're asking by David Z♦ Jul 11 '17 at 2:22
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
Magnetic field doesn't play a part. In the case of the earth, the magnetic field is incredibly weak and can't attract much.
Gravity and centrifugal forces have to do with the mass of a body, not the magnetic pole strength. Magnetic fields are different beasts entirely which have to do with the velocity of charged particles or their magnetic pole strength.
As stated before our planets magnetic field is too weak to play a significant role.
Centrifugal force just describes conservation of momentum, that means that a body (e.g. earth) wants to go in a straight line forever, unless a force (e.g. gravity from the sun) acts on it. The force that forces a body on a curved path is usually called centripetal force (see wikipedia).
PS: Gravity not only acts on all objects with mass, but even on those without any mass, like photons (i.e. light). This phenomenon appears in nature when light by the gravitational field of a galaxy cluster. This is then called a gravitational lens (see wikipedia).