8. Three stars of equal mass m rotate in a circular path of radius r about their center of mass, as shown in the figure. They are equidistance from each other. The angular velocity of the motion is ______. (A) (B) (C) (D)(E)

2. The first stage of a Saturn V space vehicle consumes fuel and oxidizer at the rate of 1.50 × 10⁴ kg/s, with an exhaust speed of 2.60 × 10³ m/s. What is the acceleration of the vehicle just as it vertically lifts off the launch pad on the Earth if the vehicle's initial mass is 3.00 × 10⁶ kg? (A) 7.40 m/s² (B) 5.37 m/s² (C) 3.20 m/s² (D) 1.48 m/s² (E) None of the above is correct.

8. Three stars of equal mass m rotate in a circular path of radius r about their center of mass, as shown in the figure. They are equidistance from each other. The angular velocity of the motion is ______.
(A)
(B)
(C)
(D)
(E)

相關試題

相關試卷