Orbital Velocity of Satellite Class 11 India

Orbital Velocity

• Orbital velocity refers to the speed at which a satellite revolves around the Earth, necessary to maintain its orbit and prevent it from falling into the atmosphere.
• This velocity is approximately 7.8 km/s (17,500 mph) at an altitude of 200 km (124 miles) above the Earth's surface.

Variation with Distance

• Orbital velocity decreases as the satellite's distance from the Earth increases due to the weakening of the gravitational force.
• At higher altitudes, the satellite's velocity must be reduced to maintain a stable orbit, otherwise, it would escape the Earth's gravitational pull.

Importance in Satellite Missions

• Understanding orbital velocity is crucial in satellite missions to ensure accurate placement and maintenance of the satellite's orbit.
• A precise calculation of orbital velocity is necessary to achieve the desired trajectory, altitude, and velocity for a successful satellite launch.
• Inaccurate calculations can result in satellite loss, orbit decay, or collision with other objects in space.

Learn about the concept of orbital velocity and how it relates to satellite missions in Class 11 Physics in India. Explore how the orbital velocity of a satellite changes based on its distance from Earth and why this knowledge is crucial for successful satellite missions.