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Q. A 105 granite cube slides down a 40 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 265 steel cube at rest. How high above the table should the granite cube be released to give the steel cube a speed of 160 ?

Q. A uniform 290 ladder rests against a perfectly smooth wall, making a 40.0 angle with the wall. Find the normal forces that the wall on the ladder.

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Category:- Physics
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