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SHM Part 2 (numerical 3) file4

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A block of mass 4 Kg hangs from a spring of force constant k =400 N/m. The block is pulled down 15 cm below equilibrium and released. a) Find the amplitude, frequency and period of the motion. b) How long does it take the block to go from 12 cm below equilibrium ( on the way up ) to 9 cm above equilibrium ?

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numerical connectin spring and ref. circle

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Kajal Sengupta
Physics teacher of 9th to 12 th grade,A, AS level
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