Question 1 :
Can we call the gravitational force between the Earth and an object as gravity?
Question 2 :
Amit buys few grams of gold at the poles as per the instruction of one of his friends. He hands over the same when he meets him at the equator. Will the friend agree with the weight of gold bought?
Question 3 :
Gravitational force acts on all objects in proportion to their masses. Does a heavy object fall faster than a light object?
Question 4 :
The force acting on an object ___________ to the surface is called thrust
Question 5 :
A cube of side 5 cm is immersed in water and then in saturated salt solution. In which case will it experience a greater buoyant force.
Question 6 :
Value of 'g' on moon is _________ of the value of 'g' on earth. Fill in the blank.
Question 8 :
Name the force acting on a plastic bucket containingwater held above ground level in your hand. <br>
Question 9 :
The force of gravity with which a body is attracted towards the center of the earth is _________. <br/>
Question 10 :
A body of mass $50  kg$ has a volume of $0.049  {m}^{3}$. The buoyant force on it when it is completely immersed inside the water would be 
Question 11 :
Assertion: Weight of solid in air is W and in water is $T=\dfrac{2W}{3}$ Then relative density of solid is 3.0.
Reason: Relative density of any solid is given by $ \displaystyle RD=\dfrac{\text{Weight in air}}{\text{Change in weight in water}}$
Question 12 :
A point mass of $10kg$ is placed at the centre of Earth. The weight of the point mass will be
Question 13 :
For a floating body, its weight $W$ and upthrust $F_B$ on it are related as:
Question 14 :
If the earth shrinks half in radius with its mass remaining the same, the weight of an object on earth will :<br/>
Question 15 :
A solid cube and a solid sphere both made of same material are completely submerged in water but to different depths. The sphere and the cube have same surface area. The buoyant force is<br/>
Question 16 :
A force of $10 N$ acts on a body of mass $5 kg$. Find the acceleration produced.
Question 17 :
One Newton is the force, which produces an acceleration of :<br/>
Question 18 :
A ball of mass M moving with a velocity V collides head on elastically with another of same mass but moving with a velocity v in the opposite direction. After collision,<br>
Question 19 :
When a horse pulls a cart, the force which helps the horse to move forward is the force exerted by
Question 20 :
'The action and reaction are equal in magnitude'. Is this statement true and which law is related with it?
Question 22 :
The engine of a car produces an acceleration of $6 \ m/s^2$ in the car. If this car pulls a block of the same mass, then the acceleration would be:
Question 23 :
Inside a railway car a plumb bob (a heavy mass suspended by a thread)is suspended from the roof and a helium filled balloon is tied by a string to the floor of the car. When the railway car accelerates to the right, then
Question 24 :
A body moves with uniform speed along a straight line. So, it is acted upon by:
Question 25 :
According of Newton's Third Law of Motion, action and reaction are equal and opposite. The resultant force is not zero because