A mass of 0.4kg Suspended for From the end Оf a vertical helical spring of force constant of 20N/M calculate the extension of the spring , assuming Hooke's law is obeyed.The mass is now pulled down a distance of 5cm(0.05)and released.Find(1) the period of oscillation.(2)the maximum potential energy of the spring.(3) the kinetic energy of the mass when 2cm from the center of oscillation.
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has the time of oscillation is 2s
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