Problem 7: The figure shows Superhero and Trusty Sidekick hanging motionless from a rope. Superhero's mass is 98 kg, while Trusty Sidekick's is 47 kg, and the mass of the rope is negligible. m, Randomized Variables m = 98 kg m2 = 47 kg m2 Part (a) Find the tension in the rope above Superhero in Newtons. Numeric A numeric value is expected and not an expression. T =. Part (b) Find the tension in the rope between Superhero and Trusty Sidekick in Newtons. Numeric : A numeric value is expected and not an expression. T' =

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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.