Question 1 :
The force acting on a mass of 1 g due to the gravitational pull on the earth is called 1 g-wt. One g-wt equals :
Question 3 :
Fill in the blank.When a solid object is immersed in a liquid, _________ force acts on the object because of the volume of liquid displaced.
Question 4 :
Relative density of silver is $10.8$. Its density in $g/cm^3$ is<br/>
Question 5 :
A boy carries a fish in one hand and a bucket (not full) of water in the other hand. If he places the fish in the bucket, the weight now carried by him (assume that water does not spill) <br>
Question 6 :
A particle falling down freely under the influence of gravity covers a distance of 20 m in 4 secs. Find its acceleration
Question 7 :
Specific gravity of the body is numericallyequal to ________of the body.
Question 8 :
The mass of an wooden cube of edge 10 cm is 800 g. If the mass of an equal volume of water is 1 kg, then find the relative density of a wooden cube.<br>
Question 10 :
When the weight of a given body is more than the weight of the fluid displaced by it, the body:
Question 11 :
A body is heated. What is the effect on its relative density?
Question 12 :
Mass of moon is $7.34\times 10^{22}kg$. If the acceleration due to gravity on the moon is $1.4 ms^{-2}$, the radius of the moon is: $[G=6.667\times 10^{-11} N m^2 kg^{-2}]$
Question 13 :
The acceleration of free fall for object moving near the surface of Earth is:
Question 15 :
The earth is an approximate sphere. If the interior contained matter which is not of the same density everywhere, then on the surface of the earth, the acceleration due to gravity :
Question 16 :
Assertion: Heavier bodies fall with greater acceleration.
Reason: Gravitational force is stronger on heavier bodies.
Question 17 :
If $1 kg wt = 10 N$, the value of gravitational intensity will be
Question 18 :
The SI unit of relative density is kg/m$^3$. True or false.
Question 19 :
A person stands on a weighing machine kept on the floor of an elevator, if the elevator moves upward with a constant acceleration, the apparent weight of the person
Question 20 :
Weight on earth : _______ : : Weight on moon : 50 N
Question 21 :
The weight of a body on the surface of the moon is $\dfrac {1}{6}th$ of that on the earth's surface. It is because acceleration due to gravity on the surface of the moon is six times that on the surface of the earth.
Question 22 :
If you have to purchase 100 kg weight of gold, which place would you prefer-the Earth or the Moon? <br>Similarly, if you have to sell gold, which place you prefer - The earth or the moon? Explain.<br>