If you have 2 iron spheres and a magnet, the lighter sphere will move first to the magnet. But with earths gravity fall tests we know that every object falls with the same speed when dropped no matter theirs weight. What makes it different?
In: Physics
Because the gravitational force is explicitly proportional to the mass of both objects attracting each other. A large object made of the same material has more mass, so is attracted more strongly, but because of its greater mass, that cancels out and the acceleration works out the same. In the case of a magnet the attractive force is dependent entirely on the strength of its magnetic field, which is intrinsic to the magnet and isn’t affected by the mass of the other object, so it will exert the same force, meaning lighter objects will accelerate faster.
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