8. Salts of metals can be made by reacting one of the metal's compounds with the appropriate acid. Plan an experiment to prepare pure, dry crystals
of magnesium sulfate, MgSO4, by reacting a suitable magnesium
compound with a suitable acid. *

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping