Solve the below problem:
Q: A 120-kg satellite has a radius of gyration of 600 mm with respect to the y axis and is symmetrical with respect to the zx plane. Its orientation is changed by firing four small rockets A, B, C, and D, each of which produces a 16.20-N thrust T directed as shown. Determine the angular acceleration of the satellite and the acceleration of its mass center G
(a) When all four rockets are fired,
(b) When all rockets except D arefired.