Question 1 :
A body is lying on the surface of earth.Suppose that the earth suddenly loses its power of attraction, then:
Question 2 :
Assertion: Density of a substance is the ratio of mass of the substance to its volume
Reason: Relative density is the ratio of density of substance to the density of water at 4$^{\circ}$C
Question 4 :
When a body is going upwards vertically the acceleration due to gravity is taken as
Question 7 :
If the density of a metal is 8.2 g/cc, its relative density is.
Question 8 :
At the Earth, a block of mass $m$ which rest on the frictionless table,  let $F$ be the force required to produce acceleration $a$. Calculate the force at the Moon to produce same acceleration if  $g_{moon}$ is one sixth of $g_{earth}$.
Question 10 :
Weight on earth : _______ : : Weight on moon : 50 N
Question 11 :
When an object is thrown up from the surface of the earth, the force of gravity:<br/>
Question 12 :
Which of the following is not an application of Archimedes principle :
Question 13 :
Density of a solid is $18300 kg/m^3$. What is its relative density?
Question 14 :
The R.D. of a metal block is $2.7 \times {10}^{3} {kg}/{{m}^{3}}$. It is immersed in water. State the situation.
Question 15 :
The value of g on the moon is $\dfrac {1}{6}th$ that on earth. A body weighing 60 kg on the earth has weight on the moon equal to?
Question 16 :
When the weight of a given body is more than the weight of the fluid displaced by it, the body:
Question 17 :
The acceleration due to gravity on the moon isone sixth that on the earth. A high jumper canjump 2m on earth. What distance can hejump on the moon?
Question 18 :
The weight of a body is $120 N$ on the earth. If it is taken to the moon, its weight and mass will be about (Take g$_e$ = 10 m/s$^2$)
Question 19 :
A body is floating in water such that 6 out of 10 parts of its volume is under water. Its density is
Question 20 :
Buoyant force acting on an object is equal to the ___