Question 2 :
Assertion: Heavier bodies fall with greater acceleration. Reason: Gravitational force is stronger on heavier bodies.

Question 3 :
Ice is floating on water in a beaker when ice completely melts then level of water in beaker:

Question 5 :
Buoyant force experienced by a solid is _____ the weight of the fluid displaced by it

Question 6 :
The volume of a $500\&#160; g$ sealed packet is $350\ cm^{-3}$. Will the packet float or sink in water if the density of water is $1\ g$ $cm^{-3}$? What will be the mass of the water displaced by this packet?<br/>

Question 7 :
A piece of paraffin wax of density 0.9 g/cc floats on water.A layer of turpentine of density 0.87 g/cc is added on top of water until the wax is entirely submerged.The ratio of the volume of wax immersed in water to that in turpentine is

Question 8 :
100 kg of both iron and cotton are weighed by using a&#160;spring balance on the surface of the earth. If $R_{1}&#160; and \ \ &#160;R_{2}$ are the readings shown by the balance,then:

Question 9 :
A box, when hung from a spring balance shows a reading of $50$kg. If the same box is hung from the same spring balance inside an evacuated chamber, the reading on the scale will be.<br>

Question 10 :
A body is weighed at the poles and at the equator. The weight:

Question 11 :
A mass $M$ is split into two parts $m$ and $\left(M-m\right)$ which are then separated by a certain distance. The ratio ${m}/{M}$ which maximizes the gravitational force between the parts is

Question 12 :
A particle is dropped under gravity from rest from a height $h (g = 9.8 \,m/s^2)$ and it travels a distance $\dfrac{9h}{25}$ in the last second the height '$h$' is:

Question 14 :
The maximum vertical distance through which a fully dressed astronaut can jump on the earth is&#160;0.5 m. If mean density of the moon is two thirds&#160;that of the earth and radius is one quarter that of the earth, the maximum vertical distance through&#160;which he can jump on the moon and the ratio of&#160;time of duration of the jump on the moon to that&#160;on the earth are.

Question 15 :
A man of mass m starts falling towards a planet of mass M and radius R. As he reaches near to the surface, height realizes that he will pass through a small hole in the planet. As he enters the hole, he seen that the planet is realize made of two pieces a spherical shell of negligible thickness of mass $\displaystyle\frac{2M}{3}$ and a point mass $\displaystyle\frac{M}{3}$ at the centre. Change in the force of gravity experienced by the man is?