Question Text
Question 1 :
The _________ force is responsible for providing the necessary centripetal force to planets moving around the Sun.<br/>
Question 2 :
The gravitational force between two bodies is $6.67\times 10^{-7}N$ when the distance between their centres is 10 m. If the mass of first body is 800 kg, then the mass of second body is :<br/>
Question 3 :
If the gravitational force of earth suddenly disappears, then which of the following is correct? <br/>
Question 4 :
Always an attractive force is acted between two bodies and this force depends upon the masses of the bodies and the distance between them. This force is:
Question 5 :
Two particles of masses $m_1$ and $m_2$, approach each other due to their mutual gravitational attraction only. Then,
Question 6 :
Universal gravitational constant $G$ is proportional to distance $r$ between two masses as-<br/>
Question 8 :
The gravitational force between two stones of mass 1 kg each, separated by a distance of 1 m in vacuum is.
Question 10 :
The gravitational attraction between the two bodies increases when their masses are
Question 11 :
The value of universal gravitational constant $'G'$ was first experimentally determined by :
Question 12 :
SI unit of G is $Nm^{ 2 }{ kg }^{ -2 }$. Which of the following can also be used as the SI unit of G?
Question 13 :
Two object are placed at some distance, if their masses become two times and distance between them becomes half then value of new gravitational force will be :<br/>
Question 15 :
A ball is projected vertically up with a velocity of $20 ms^{-1}$. Its velocity, when the displacement is $15 m$, is......... $ms^{-1}.$ (Take  $g = 10 ms^{-2}$)<br/>