State the law of conservation of angular momentum for a rotating object
What will be an ideal response?
The total angular momentum of a rotating object remains constant if the net external torque acting on it is zero.
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Satellite Motion: A satellite orbits the Earth once every 6.0 hours in a circle. What are the magnitude and direction of the acceleration of the satellite? (G = 6.67 × 10-11 N ? m2/kg2, Mearth = 5.97 × 1024 kg)
What will be an ideal response?
A 450 g baseball is pitched, reaching the batter with a speed of 37 m/s and is hit such that it returns on the same line at 48 m/s. If the ball was in contact with the bat for 0.22 seconds, what was the average net force experienced by the ball during the time of contact?
A. 170 N B. 98 N C. 77 N D. 18 N
The speed of a satellite orbiting Earth is given by v = ?(GM/d). Escape speed from Earth is given by v = ?(2GM/d), where in both cases G is the gravitational constant, M is Earth's mass, and d is distance from Earth's center
If a satellite's kinetic energy were doubled it could A) orbit at twice its distance from Earth. B) orbit at four times the distance from Earth. C) escape Earth.
In a binary system, the most massive star:
A) shows a large Doppler shift. B) is farthest from the balance point of the system. C) follows the largest orbit. D) is closer to the center of mass.