Suppose a body of mass m lies on an inside surface of a spacecraft revolving around the earth in an orbit of radius r Explain why dose the body experiences weightlessness?

An artificial satellite is revolving around the earth in a circular orbit of radius r. If the time period of revolution of the satellite is T, show that T^2 prop r^3 .

Two satellite of masses m_1 and m_2 (m_1 gt m_2) are revolving around the earth in orbits of radii r_1 and r_2 (r_1gt r_2) with velocities v_1 and v_2 respectively . In this case

The total energy of an artificial satellite of mass m revolving around the earth of mass M is ……….. The radius of the orbit of the satellite =r. [Fill in the blanks]

An aritificial satellite of mass m is moving round the earth, in an orbit of radius 2R. How much work is to be done to transfer the satellite to an orbit of radius 4R? How will the potential energy of the satellite change? (R = Radius of earth).

An artificial satellite of mass m is moving round the earth in an orbit of radius 2R. How much work is to be done to transfer the satellite to an orbit of radius 4R ? How will the potential energy of the satellite change ? (R=Radius of earth)

Two satellites A and B of the same mass revolve around the earth in circular orbits. They are at heights of R and 3R respectively from the surface of the earth (R=radius of the earth). Find the ratio of their kinetic energies and potential energies.