A mass m=720.0 g and spring with spring constant k oscillates with angular frequency  ω=9.80 rad/s and amplitude xm=15.0 cm as in Figure 5. It is maximally stretched at time t=0 (i.e.x(0)=+xm and Φ=0). D. At t=5s the total mechanical energy E_____ E at t=3 s. a) > b) = c) < E. Calculate the length L of a Simple Pendulum with the same period T of this mass.

Refer to the picture below

Consider an ideal spring with spring constant k = 20 N/m. The spring is attached to an object of mass m = 2.0 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance xo = 50 cm from equilibrium and then released with an initial speed vo= 0 m/s toward the equilibrium position. x=0 equilibrium initial state a. What is the period of oscillation for this system? b. Starting at t = 0, how long will it take for the object to first return to the equilibrium position?

Chapter 15, Problem 072 A uniform circular disk whose radius R is 14.7 cm is suspended as a physical pendulum from a point on its rim. (a) What is its period? (b) At what radial distance r < R is there a pivot point that gives the same period? (a) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show Work