Question

Which of the following statements are true? Because the Earth has mass it produces gravity. There is no gravity at the space station I need to do work to move a satellite from lower to higher orbit. Because the force of gravity is a conservative force and because it acts as a centripetal force it does no work, the mechanical energy of Earth is conserved and it will not crush into the Sun. Since Moon has no air, there is no gravitational force on objects on the Moon An infinite amount of work would need to be done to push an object infinitely far away from Earth against its gravity- The gravitational potential energy of a satellite in Earth's orbit is negative. There is no gravitational force outside Earth's atmosphere. A force of attraction between two masses depends inversely on the square of the distance between the masses. Any law that has this kind of dependence is called an inverse square law". Because the Earth is falling around the Sun it will eventually crash into it. The weight of an object is a constant property of the object. Gravitational force has something to do with air.

Answer 1

'mall of our (i Because the Earth has mass it producer AK - Connect (V) a FeliMm Depends on (ii) Correct () As there is zero gravi si spoce, (ii) Correct (V) . We need to do y work against tarttis con trepetal force (duo % gravi latione porce). liv) correct (V) As Earth's and Sun's gravitational Ance is balance is Earth's orbit. (W) weng (x) "There is no dependoncy of gravitachy tal force due to all (vi) Wrong' (x) As we com aleulate the amount of work to be done to push an objects mifinitely far away from Earth general its gravity. As moving a body with Escape velocity can be coon the Earth's gravitational (frenity).

un correct (V) AS. PIE =-GIMm 4 - R vili Wrong (x) Earth's gravitatimal force depends on distance, not an atmosphere, lix) Correet ( As, F=G MM R2 . FX1 22 Clow branche (x) Wrong (X) Because of acceleration balance, there is possibility to crush into so sum. (xi) Wreong (x)" weight of body depend on growity of planet, so it is not constant propesh Pof bod on obféet. xiij Cleone (x). There is no depondony of gravity to the air.