A bucket filled with water has a mass of 4.54 kg. It is tied to a 65 cm-long rope that can withstand a force of 525 N. The bucket is spun at a constant speed with a frequency of 2.0 Hz.  a. Calculate the tension on the rope at the bottom of the circle.  b. Using only your answer from a, can you determine if the rope is strong enough to withstand the circular motion? Explain.

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.