Are Linear and Angular Momentum Conserved for a Satellite?

The video tutorial discusses the conservation of linear and angular momentum for a satellite in an elliptical orbit. It explains that linear momentum is not conserved due to the gravitational force acting on the satellite. However, angular momentum is conserved because the net external torque is zero when considering the center of mass of the primary as the axis of rotation. The tutorial emphasizes the importance of defining the axis of rotation and concludes with insights on elliptical and circular orbits.

What is the condition for the conservation of linear momentum in a system?

• The net external force on the system is zero.

• The system is in a circular orbit.

• The system has constant velocity.

• The system is isolated from gravitational forces.

Why is the linear momentum of the satellite not conserved?

• Because the satellite is in a circular orbit.

• Because there is a net external force acting on it.

• Because the satellite is too small.

• Because the satellite is moving too fast.

What must be defined to determine the conservation of angular momentum?

• The axis of rotation.

• The mass of the satellite.

• The speed of the satellite.

• The shape of the orbit.

What is the angle between the r vector and the gravitational force in the satellite's orbit?

• 0 degrees

• 90 degrees

• 45 degrees

• 180 degrees

What type of orbit do most satellites have?

• Hyperbolic

• Parabolic

• Elliptical

• Circular