8. A 355 g mass is attached to a spring (k = 435 N/m). If the system is allowed to oscillate on a frictionless surface, what is the period and frequency of the motion?9. You are designing a pendulum clock escapement. You have determined that the pendulum must have a period of 0.500 s. What should be the length of the thing?10. a) A load of 45 N is attached to a spring that is hanging vertically. The spring is stretched 0.14 m from its equilibrium position. What is the spring constant?b) If a 60 N weight is used instead, what would you expect the spring stretch to be instead?11. Ifaspringconstantis40N/mandanobjecthangingfromitstretchesit0.50m,whatisthe mass of the object?This is for question 7