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A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could explain these phenomena?
a) The railroad car is at rest.
b) The railroad car is accelerating to the left.
c) The railroad car is moving with constant velocity to the right.
d) The railroad car is accelerating to the right.
Ans:
A pendulum that is suspended from the ceiling of a railroad car is observed to hang at an angle of 100 to the right of vertical this phenomenon is explained with the railroad car is accelerating to the left.
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