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Q. An 800-N man stands halfway up a 5.0-m long ladder of negligible weight. The base of the ladder is 3.0m from the wall as shown. Assuming that the wall-ladder contact is frictionless, the wall pushes against the ladder with a force of what magnitude?

Q. Two events in reference frame S occur 10 mus apart at the same point in space. The distance between the two events is 2400 m in reference frame S' .

What is the time interval between the events in reference frame {rm S} ' ?

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Category:- Physics
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