Question

juanita sticks a nail to the end of a bar magnet. she then sticks a second nail to the first, then another to that one, and so on. when she gets to the seventh nail, it falls off the sixth nail. which statement best describes the forces acting on the seventh nail? the force of magnetism is equal to the force of gravity. the force of gravity is stronger than the force of magnetism. the force of magnetism is stronger than the force of gravity.

Explanation:

1. Analyze the situation: The seventh nail falls off the sixth nail. This means that the force holding it (magnetic force from the sixth nail) is not enough to overcome the force pulling it down (gravity).
2. Evaluate the options:

• If magnetic force equaled gravity, the nail would stay (not fall). So the first option is wrong.
• Since the nail falls, the downward force (gravity) must be stronger than the upward/holding force (magnetism) from the sixth nail. So the second option ("The force of gravity is stronger than the force of magnetism") is correct.
• The third option is wrong because if magnetism were stronger, the nail would not fall.

Answer:

The force of gravity is stronger than the force of magnetism.