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    What if the moon disappeared?

    What if the moon disappeared?? Homework Statement I am doing a project answering this question: what if the moon disappeared? I was looking up how the moon was affecting Earth's rotation around its axis and noticed how the moon pulls Earth backward, slowing down Earth's rotation. One of the...
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    Measuring an angle in non-inertial frame reference

    In class, we came up with an equation, a=gtanθ, to calculate the acceleration of a car using a hanging pendulum in Earth's frame of reference (θ being the angle that the pendulum makes with the vertical when the car accelerates). So far, I know that that the pendulum moves in the opposite...