Asked/Added Questions From NCERT:

  Mass:-

1. We can measure of an object by its inertia. 

2. The total quantity of matter contained in an object is called mass of an object.

3. Mass of the object remains constant at all the places.

4. Measurement of mass is done by using a pan or beam balance.

5.Mass of a body cannot change even value of g is zero at any place.

Weight:-

1. Weight=mass ×acceleration 

2. The gravitational force by which earth attracts an object is called weight of the object.

3. Weight of the object is different at all different places.

4. Measurement of weight is done by using a spring balance. 

5. Weight of the object becomes zero if g is zero. 

-Answered by Akki chauhan On 14 January 2019:10:02:25 AM

-Answered by Himanshi Verma On 14 January 2019:05:54:06 PM

  Mass:- 

1. We can measure mass of an object by its inertia.

2. The total quantity of matter contained in an object is called mass of an object.

3. Mass of the body remains constant at all places. 

4. Measurement of mass is done by using a pan or beam balance. 

5. Mass does not change even value of g is zero at any place.

Weight:-

1. Weight= mass × acceleration.

2. The gravitational force by which earth attracts an object is called weight of the object. 

3. Weight of the object is different at different places.

4. Measurement of weight is done by using a spring balance.

5. Weight of the object becomes zero if g is zero. 

-Answered by Akki chauhan On 16 January 2019:10:19:22 AM

 Gravitational Constant (G) :-

1. Its value is 6.6734×10^-11 Nm²/Kg².

2. Its value remains constant always and everywhere.

3. Its S.I unit is Nm²/kg².

4. It is Scaler Quantity. 

 Gravitational acceleration (g):-

1. Its value is 9.8 m/s².

2. Its value varies at different Places. 

3. Its unit is m/s².

4. It is a vector Quantity.

-Answered by Akki chauhan On 15 January 2019:09:47:38 AM

 The law of gravitation states that the force of attraction between any two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them. The law applies to objects anywhere in the universe. Such a law is said to be universal.

-Answered by Akki chauhan On 10 January 2019:10:50:58 AM