17. what's the role of the sun'sgravity in the solar system? o a. keeps the planets orbitingaround the suno b. prevents the sun from falling intoa black holeo c. slowly pulls the planets towardthe suno d. slowly pushes the planets awayfrom the suno mark for review (will be highlightedon the review page)

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.