Q: 8.25 A rocket is fired ‘vertically’ from the surface of mars with a speed of . If of its initial energy is lost due to martian atmospheric resistance, how far will the rocket go from the surface of mars before returning to it? Mass of mars ; radius of mars ; .
Q: 8.24 A spaceship is stationed on Mars. How much energy must be expended on the spaceship to launch it out of the solar system? Mass of the space ship ; mass of the sun ; mass of mars ; radius of mars;radius of the orbit of mars ;
Q: 8.23 A star times the mass of the sun and collapsed to a size of rotates with a speed of rev. per second. (Extremely compact stars of this kind are known as neutron stars. Certain stellar objects called pulsars belong to this category). Will an object placed on its equator remain stuck to its surface due to gravity? (mass of the sun ).
Q: 8.22 As you have learnt in the text, a geostationary satellite orbits the earth at a height of nearly from the surface of the earth. What is the potential due to earth’s gravity at the site of this satellite? (Take the potential energy at infinity to be zero). Mass of the earth , radius .