Home
Class 12
CHEMISTRY
A ball A of mass m falls on the surface ...

A ball A of mass m falls on the surface of the earth from infinity. Another ball B of mass 2m falls on the earth from the height equal to six times the radius of the earth. Then ratio of velocities of A and B on reaching the earth is `sqrt(x//y)` where x and y are coprimes. Find x+y .

A

1.5

B

2

C

0.5

D

3

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • EQUIVALENT CONCEPT & TITRATIONS

    RESONANCE ENGLISH|Exercise Exercise -2 (Part-II)|11 Videos
  • EQUIVALENT CONCEPT & TITRATIONS

    RESONANCE ENGLISH|Exercise Exercise -2 (Part-III)|5 Videos
  • EQUIVALENT CONCEPT & TITRATIONS

    RESONANCE ENGLISH|Exercise Exercise -1 (Part-III)|1 Videos
  • ELECTROCHEMISRY

    RESONANCE ENGLISH|Exercise Advanced Level Problems|88 Videos
  • FUNDAMENTAL CONCEPT

    RESONANCE ENGLISH|Exercise ORGANIC CHEMISTRY(Fundamental Concept )|40 Videos

Similar Questions

Explore conceptually related problems

A particle falls on earth : (i) from infinity. (ii) from a height 10 times the radius of earth. The ratio of the velocities gained on reaching at the earth's surface is :

A body of mass 'm' is taken from the earth's surface to the height equal to twice the radius (R) of the earth. The change in potential energy of body will be -

A body weighs w Newton on the surface of the earth. Its weight at a height equal to half the radius of the earth, will be x/y w where x and y are coprimes . Find x and y

Two balls are dropped from heights h and 2h respectively from the earth surface. The ratio of time of these balls to reach the earth is.

A satellite A of mass m is at a distance of r from the centre of the earth. Another satellite B of mass 2m is at distance of 2r from the earth's centre. Their time periode are in the ratio of

The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is :

A body of mass m is taken from earth surface to the height h equal to radius of earth, the increase in potential energy will be

A mass m on the surface of the Earth is shifted to a target equal to the radius of the Earth. If R is the radius and M is the mass of the Earth, then work done in this process is

A body of mass m is lifted up from the surface of earth to a height three times the radius of the earth R . The change in potential energy of the body is

A body projected from the surface of the earth attains a height equal to the radius of the earth. The velocity with which the body was projected is