query: What force pulls the simple electromagnetic train?
positive_passages.docid: 26140
positive_passages.text: How does this "simple" electric train work?
negative_passages.docid: 101294
negative_passages.text: For a massless pulley moving upwards with acceleration, is the upward force equal to the downward force?
negative_passages.docid: 106667
negative_passages.text: Which equation to use for simple harmonic motion?
negative_passages.docid: 79157
negative_passages.text: Is gravity just electromagnetic attraction?
negative_passages.docid: 62218
negative_passages.text: Why should Conservative forces have their curl equal to zero?(intuition)
negative_passages.docid: 76557
negative_passages.text: Is there an intuitive explanation for why Lorentz force is perpendicular to a particle's velocity and the magnetic field?
negative_passages.docid: 154695
negative_passages.text: Components of forces?
negative_passages.docid: 40334
negative_passages.text: Apparent violation of the law of conservation of angular momentum in the torques experienced by two interacting electric dipoles
negative_passages.docid: 136921
negative_passages.text: Is the Lorentz force expression valid for magnetic field created by a magnetic monopole?
negative_passages.docid: 112911
negative_passages.text: The acceleration vector of a simple pendulum
negative_passages.docid: 120657
negative_passages.text: What is the physical meaning of Lie dragging?
negative_passages.docid: 45266
negative_passages.text: How are forces "mediated"?
negative_passages.docid: 37598
negative_passages.text: Deriving the Lorentz force from velocity dependent potential
negative_passages.docid: 117403
negative_passages.text: Force on rope with accelerating mass on pulley
negative_passages.docid: 106988
negative_passages.text: What does really attracts a water stream to a charged object?
negative_passages.docid: 31264
negative_passages.text: What happens to the magnetic field in this case?
negative_passages.docid: 96638
negative_passages.text: Tension in the string of a pulley