Suppose the spring in Fig. 3-2 is stretched twice as it x=2A). What happens to (a) the energy of the system,
the maximum velocity of the oscillating mass, (c) the
Toy dart gun. A dart of mass 0.100 kg is pressed against
the spring of a toy dart gun as shown in Fig. 3–3a. The
spring, with spring stiffness constant k=250 N/m and
ignorable mass, is compressed 6.0 cfm and released. If the
dart detaches from the spring when the spring reaches its
Example 3.4:
maximum acceleration of the mass?
Example 3.5:
natural length (x=0), what speed does the dart acquire?

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.