Question

8) A 4.00-kg mass hangs vertically from a massless spring. The spring constant of the spring is 100 N/m. The mass is pulled downward 0.02 meters and then released from rest. What is the speed of the mass when it is 0.01 meter above the point from which it was released? X B) 0.0443 m/s A) 0.0866 m/s C) 0.0201 m/s D) 0.0744 m/s E) The mass will not reach the height specified.
do not solve using shm

Answer 1

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When mass is pulled , a za max 0.02m The's extension causes development of elastic potential Evergy When mass is 0.01 m. above point of release the extension in spring is n = 0.02-0.01=0.0lm and let u be the enero at this point. vel

energy remained conseurd so I kurn - Ik x 2 + 1 m ² v² t error x²) = 100 (0.02² -0.01%) = 0.075 m²/2 = v=0.0866 m/s option A is sound