A particle of mass Alk g is connected by a light inestensible string passing over a fixet smooth pulley to a particle of mass 6 kg. Botz particles are hanging freely. When the system release and is moving in the direction of kg mass with aceleration 2 ms²and taking g as 10 m s³, the value of A/ is A 6 kg # 4 kg C 8 kg D 2 kg %23

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.