Question 1 :
A particle falls towards earth from infinity. It's velocity on reaching the earth would be

Question 2 :
The rotation period of an earth satellite close to the surface of the earth is 83 min. the satellite in a orbit at a distance of three times earth radii from its surface will be

Question 3 :
A pendulum clock is set to give correct time at the sea level. This clock is moved to hill station at an altitude of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e914b2988bd895386ecf81e">  above the sea level. In order to keep correct time of the hill station, the length of the pendulum

Question 4 :
A body weighs 72{tex} \mathrm { N } {/tex} on the surface of the earth. What is the gravitational force on it due to earth at a height equal to half the radius of the earth from the surface?

Question 5 :
The escape velocity of an object on a planet whose <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e914a1e7df1e953b6cb0cd1">  value is 9 times on earth and whose radius is 4 times that of earth in <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e914bb788bd895386ecf947">  is

Question 6 :
Assume that the acceleration due to gravity on the surface of the moon is {tex}0.2{/tex} times the acceleration due to gravity on the surface of the earth. If {tex}R _ { e } {/tex} is the maximum range of a projectile on the earth's surface, what is the maximum range on the surface of the moon for the same velocity of projection

Question 7 :
If Gravitational constant is decreasing with time, what will remain unchanged in case of a satellite orbiting around earth

Question 8 :
The acceleration due to gravity on the surface of the moon is 1&frasl;6 that on the surface of earth and the diameter of the moon is one-fourth that of earth. The ratio of escape velocity on earth and moon will be

Question 9 :
The gravitational field, due to the 'left over part' of a uniform sphere (from which a part as shown, has been' removed out'), at a very far off point, {tex} \mathrm { P } {/tex}, located as shown, would be (nearly):<br><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e101a5b4faa335027dc7a0c"><br>