Question 1 :
A body measures $5 N$ in air and $2 N$ when put in water. The buoyant force is:-
Question 2 :
State whether true or false:Weight of an object on the moon is ${\frac{1}{6}}$th of its weight on the earth.
Question 3 :
The weight of 50 kg person at the surface of earth is ................
Question 5 :
Value of 'g' on moon is _________ of the value of 'g' on earth. Fill in the blank.
Question 7 :
How much mass (approximately) of a body one can hold, when a force of 1N is applied on it ?
Question 8 :
If mass of earth decreases by $25\%$ and its radius increases by $50\%$, then acceleration due to gravity at its surface decreases by nearly:
Question 9 :
If the weight of a body on the earth is 12 Newtons (N), its weight on the moon will be:
Question 10 :
State whether true or false.<br/>The value of the weight of a body varies from planet to planet.
Question 11 :
The speed of a falling body increases continuously. This is because :<br>
Question 12 :
The SI unit of 'g' is same as that of _______.
Question 14 :
The force of gravity on a body of mass W on the surface of the earth is
Question 15 :
Assuming the mass of Earth to be ten times the mass of Mars, its radius to be twice the radius of Mars and the acceleration due to gravity on the surface of Earth is $10$ $m/s^2$. Then the acceleration due to gravity on the surface of Mars is given by.
Question 16 :
The acceleration due to gravity on the moon is $1/6th$ of that on the earth. If a man can jump upto a height of $1\ m$ on the surface of the earth, how high he can jump on the surface of the moon?
Question 17 :
If the weight of a body is 6 N on the moon, what will it be on the earth?
Question 18 :
State whether true or false.<br/>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 19 :
The mass of earth is $80$ times that of moon and its diameter is double that of moon. If the value of acceleration due to gravity on earth is $9.8 m/s^{2}$, then the value of acceleration due to gravity on moon will be
Question 20 :
If both the mass and radius of the earth decrease by $1\%$ the acceleration due to gravity on the surface of the earth will
Question 21 :
If the weight of a body on the surface of the moon is 100 N, what is its mass? (g =1.6 m$s^{-2}$)
Question 22 :
A boy carries a fish in one hand and a bucket (not full) of water in the other hand. If he places thefish in the bucket, the weight now carried by him (assume that water does not spill):
Question 23 :
ACCELERATION DUE TO GRAVITY OF THE EARTH<br>Radius of earth is 6400 km and that of mars is 3200 km. Mass of mars is 0.1 that of earth's mass. Then the acceleration due to gravity on mars is nearly.
