A small mass is released by an astronaut in a satellite in space. Will it fall on the earth?

Mass of the earth

What is the mass of the earth?

What is the orbital velocity for a satellite orbiting close to the surface of earth?

• Take a thick sheet of cardboard and make a small hole or narrow slit in its middle. • Allow sunlight to fall on the narrow slit. This gives a narrow beam of white light. • Now, take a glass prism and allow the light from the slit to fall on one of its faces as shown in Fig. • Turn the prism slowly until the light that comes out of it appears on a nearby screen. What do you observe? You will find a beautiful band of colours.

How does the orbital velocity of a satellite depend on the mass of the satellite?

Does Archimedes' principle hold in a vessel in free fall or in a satellite moving in a circular orbit

An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space-station orbiting around the earth has a large size, can he hope to detect gravity?

Which of the following symptoms is likely not to afflict an astronaut in space (a) swollen feet, (b) swollen face, (c) headache, (d) orientational problem?

What is the work done by the force of gravity on a satellite moving round the earth? Justify your answer.