1 (10 paints) Sliding Block A block of mass air is attached to a wall with a spring and is free to slide on a horizontal, frictionless surface. The block is pulled a distance to from its equilibrium position and is released from rest m a) Determine the position , of the block at which the magnitude of its velocity is minimum. Justify your answer. WWWWWW m b) If the block were pulled (i c, if the spring were stretched) a distance 21. from its equilibrium position and then released, would the period of oscillation increase. decrease. or remain the same? Justify your answer c) The mass a is replaced by an unknown mass .M/, which is pulled a distance so from the spring's equilibrium position and then released. The period of the system is observed to be greater by a factor of 2.5 compared to its original value, Determine the relation between the two masses. me and M ( calculate If in terms of m)