Spring of force constant
A 1.04 kg mass is attached to a spring of force constant 10.9 N/cm and placed on a frictionless surface. By how much will the spring stretch if the mass moves along a circular path of radius 0.495 m at a rate of 1.90 revolutions per second?
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A backpack full of books weighing 53.0 rests on a table in a physics laboratory classroom. A spring with a force constant of 140 is attached to the backpack and pulled horizontally. If the backpack begins to slide when the spring ( = 140 ) stretc
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