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PhoenixRising
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Homework Statement
You are conducting an experiment inside a train car that may move horizontally along rail tracks. A load is hung from the ceiling on a string. The load is not swinging, and the string is observed to make a constant angle of with the horizontal. No other forces are acting on the load. Which of the following statements are correct?
Statements include:
The train is an inertial frame of reference.
The train is not an inertial frame of reference.
The train may be at rest.
The train may be moving at a constant speed in a straight line.
The train may be moving at a constant speed in a circle.
The train must be speeding up.
The train must be slowing down.
The train must be accelerating.
Please help, and if you could, explain why as well. I am doing these as practice for an exam and would really like to lock down the concept.