anticlockwise moment 5m What is the acting on this crane? 25 m load 4000 N O 120000 Nm O 100000 Nm O 140000 Nm movable- concrete blocks 20000 N

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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.