Study the entries in the following table and rewrite them putting the connected items in a single row. I II III Mass m s - 2 Zero at the centre Weight kg Measure of inertia Acceleration due to gravity N m 2 kg - 2 Same in the entire universe Gravitational constant N Depends on height

The SI unit of mass is kg . It is the measure of inertia of the body. Mass is the amount of matter in the body. The inertia of a body is the inability of the body to change by itself its state of rest or state of uniform motion along a straight line. Therefore, mass is the measure of inertia of a body. The SI unit of weight is N . Weight is the force exerted on an object by the planet. It depends on the acceleration due to gravity of the planet. So at the centre of the planet, it is zero as the acceleration due to gravity at the centre of the planet is zero. The acceleration due to gravity is measured in m s - 2 . It is directly proportional to the mass of the planet and inversely proportional to the square of the distance from the centre of the planet. So it depends on the height from the surface of the planet. The value of universal gravitational constant is G = 6 . 67 × 10 - 11 N m 2 kg - 2 . As it is universal constant, it remains same everywhere. This is because it does not depend upon the masses of the bodies, distance between the bodies, nature of the medium separating the bodies, shape and size of the bodies as well as nature of the bodies. I II III Mass kg Measure of inertia Weight N Zero at the centre Acceleration due to gravity m s - 2 Depends on height Gravitational constant N m 2 kg - 2 Same in the entire universe

E M B I B E

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Think about it>Q 2

EASY

10th Maharashtra Board

IMPORTANT

Earn 100

What would happen if the value of $G$ was twice as large?

Important Questions on Gravitation

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Can you tell?>Q 1

What would be the value of

g

on the surface of the earth if its mass was twice as large and its radius half of what it is now?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Think about it>Q 1

Will the direction of the gravitational force change as we go inside the earth?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Think about it>Q 2

What will be the value of

g

at the centre of the earth?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Use your brain power>Q 1

Will your weight remain constant as you go above the surface of the earth?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Use your brain power>Q 2

Suppose you are standing on a tall ladder. If your distance from the centre of the earth is

2 R

, what will be your weight?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Use your brain power>Q 1

According to Newton's law of gravitation, earth's gravitational force is higher on an object of larger mass. Why doesn't that object fall down with higher velocity as compared to an object with lower mass?

MEDIUM

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 1

Study the entries in the following table and rewrite them putting the connected items in a single row.

I	II	III
Mass	$m s^{- 2}$	Zero at the centre
Weight	$kg$	Measure of inertia
Acceleration due to gravity	$N m^{2} {kg}^{- 2}$	Same in the entire universe
Gravitational constant	$N$	Depends on height