3. A spring is hanging vertically and has a spring constant of 5980 N/m. An unknown mass is hung from the spring. If the mass causes the spring to stretch by 0.24 m, find the weight and mass of the object. 

4. A cube rests on a table. The cube has a mass of 7.3 kg and each side of the cube is 0.09 m long. What is the pressure of the cube resting on the table?