1.An ideal massless spring is hanging vertically. When a 0.54-kg mass is attached to the spring, the spring stretches by 3.7 cm before reaching a new equilibrium. Then the mass is displaced by 1.9 cm from the new equlibrium. What is the frequency of the resulting oscillation?
2. An ideal massless spring is hanging vertically. When an unknown mass is attached to the spring, the spring stretches by 4.8 cm before reaching a new equilibrium. Then the mass is displaced by 1.9 cm from the new equlibrium. What is the frequency of the resulting oscillation?