Inside a satellite orbiting very close to the earth’s surface, water does not fall out of a glass when it is inverted. Which of the following is the best explanation for this? (a) The earth does not exert any force on the water. (b) The earth’s force of attraction on the water is exactly balanced by the force created by the satellite’s motion. (c) The water and the glass have the same acceleration, equal to g, towards the centre of the earth, and hence there is no relative motion between them. (d) The gravitational attraction between the glass and the water balances the earth’s attraction on the water.

Inside a satellite orbiting very close to the earth’s surface, water

1.	Inside a satellite orbiting very close to the earth’s surface, water does not fall out of a glass when it is inverted. Which of the following is the best explanation for this? (a) The earth does not exert any force on the water. (b) The earth’s force of attraction on the water is exactly balanced by the force created by the satellite’s motion. (c) The water and the glass have the same acceleration, equal to g, towards the centre of the earth, and hence there is no relative motion between them. (d) The gravitational attraction between the glass and the water balances the earth’s attraction on the water.
Answer» Correct Answer is: (c)