A satellite orbits a planet of unknown mass in a circle of radius 2 x 107 m. The magnitude of the gravitational force on the satellite from the planet is F = 80 N. a) What is the kinetic energy of the satellite in this orbit? b) What would F be if the orbit radius were increased to 3 x 107 m?

You have two 1500 kg masses 80.0 m apart. What is the gravitational potential energy of this system? Assume U= 0 for infinite separation of the three masses.

A space capsule of mass 505 kg is at rest 8.00 x 10' m from the center of the Earth. When it has fallen 5.00 x 10° m closer to the Earth, finu le (a) What is the change in the system's gravitational potential energy? (b) Find the speed of the satellite at that point. m/s

The figure below shows the potential energy function U(r) of a projectile plotted outward from the surface of a planet of radius Rs.  What is the minimum velocity required for a 1.8 kg object to "escape" the gravitational field of the planet.

A 500 kg communication satellite is to be placed in geostationary orbit around the Earth. a)How high does it have to go to have the same period as the Earth? b)What is the gravitational potential energy of the satellite before going into orbit? c)What is the total energy of the satellite in geostationary orbit? d)What is the work that the rocket must do to place the satellite in geostationary orbit?

A planet with a radius of 6.00 × 107 m has a gravitational field of magnitude 41.7 m/s2 at the surface. What is the escape speed from the planet?

An object that has a gravitational potential energy of 734 J is lifted 5 meters.  What is the object's mass? Question 9 options: 9.8 kg 735 kg 15 kg 3 kg

A 0.23-kg stone is held 1.1 m above the top edge of a water well and then dropped into it. The well has a depth of 4.6 m. (a) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone-Earth system before the stone is released? (b) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone-Earth system when it reaches the bottom of the well? (c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well?

In a futuristic scenario, you are assigned the mission of making an enemy satellite that is in a circular orbit around Earth inoperative. You know you cannot destroy the satellite, as it is well protected against attack, but you can try to knock it out of its orbit so it will fly away and never return. What is the minimum amount of work ?W applied to the satellite that is required to accomplish that? The satellite's mass and altitude are 969 kg969 kg and 241 km.241 km. Earth's mass and radius are 5.98×1024 kg5.98×1024 kg and 6370 km.

In deep space, sphere A of mass 30 kg is located at the origin of an x axis and sphere B of mass 10 kg is located on the axis at x = 0.85 m. Sphere B is released from rest while sphere A is held at the origin. (a) What is the gravitational potential energy of the two-sphere system just as B is released? (b) What is the kinetic energy of B when it has moved 0.25 m toward A? Additional Materials eBook Powers of Ten