Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 5

EASY

JEE Main

IMPORTANT

Earn 100

Gravitational force between two objects separated by $20 cm$ is $1.0 \times 10^{- 8} N$ . If the total mass of the two objects is $5.0 kg$ , then the mass of the objects in $kg$ , are

26.67% studentsanswered this correctly

Important Questions on Gravitation

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 6

A light planet is revolving around a massive star with a period of revolution

T

. If the gravitational force of attraction varies as

r^{\frac{- 5}{2}},

then

T^{2}

is proportional to (

r

is the distance between the planet and star)

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 7

If the radius of earth were to shrink by

1 %

, keeping its mass same, the acceleration due to gravity on the earth's surface would,

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 8

The value of acceleration due to gravity at a height of

10 km

from the surface of earth is

x

. At what depth inside the earth is the value of the acceleration due to gravity has the same value

x

?

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 9

The acceleration due to the gravity on the moon is one-sixth of the acceleration due to gravity on the earth. If the average density of the moon is three fifth that of earth, the moon's radius in terms of earth's radius

R_{e}

is

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 10

The radius of the Earth is about

6400 km

and that of Mars is about

3200 km

. The mass of the Earth is about

20

times the mass of Mars. An object weighs

500 N

on the surface of Earth. Its weight on the surface of Mars would be

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 11

It is given,

R

is the radius of the earth and

ω

is its angular velocity and

g_{p}

is the value of

g

at the poles. The effective value of g at the latitude

ϕ = 60 °

will be equal to

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 12

If the earth is supposed to be a sphere of radius

R

, if

g_{30 °}

is the value of acceleration due to gravity at a latitude of

30 °

and

g

at the equator, the value of

g - g_{30 °}

is

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 6 - Gravitation>Level 1>Q 13

Assuming, the earth to have a constant density, point out which of the following curves show the variation of acceleration due to gravity from the centre of the earth to the points far away from the surface of the earth