Gravitation Tes...

If water falls from a tap, then the volume rate of flow of water at depth of  $$h,$$  ($$A _ { 0 }$$  is the area of cross-section of the mouth and  $$\dfrac { A _ { 0 } } { 2 }$$  is the corresponding area at depth  $$h$$ )

Four marbles are dropped from the top of a tower one after the other with an interval of one second. The first one reaches the ground after 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third and the third and fourth will be respectively 

A body dropped freely has covered $${(16/25)}^{th}$$ of the total distance in the last second. Its total time of fall is 

In the situation shown , AB is a thin uniform rod of mass m and length l. The gravitation force exerted by it on the particle of m kept at C  has magnitude

A body of mass $$10 \ kg$$ is thrown up with a velocity $$98 ms^{-1}$$. Simultaneously another is dropped from a tower. After 2 seconds their momenta are found to be same in magnitude. Then the mass of the freely falling body is 

A stone is dropped from some height, then the distance travelled by stone in $$4^{th},5^{th},6^{th}$$ seconds are in the ratio of 

A person weighs $$110.84\ N$$ on the moon whose acceleration due to gravity is one-sixth of that earth if the value of g on earth is $$9.8 \ ms^{-2}$$ calculate, acceleration due to gravity on the earth.

Two point masses A and B have masses in the ratio of 1 : 4 .The point masses are at distance 1 m apart. At what distance from point mass B. a point mass m is placed so that at that  point the resultant force on it zero ?

From the top of a tower, a stone is projected vertically upwards with a velocity of $$20 \ m/s$$ and its reaches the ground in $$8 \ sec$$. If $$g=10 \ m/s^2$$, the height of the tower is

A body falls from  height h=200 m. The ratio of distance travelled in each 2 s, during t=0 to t=6 s of the journey is ($$g= 10 m/s^2$$):