Home
Class 12
PHYSICS
A man of mass m starts falling towards a...

A man of mass m starts falling towards a planet of mass M and radius R. As he reaches near to the surface realizes that he will pass through a small hole in the planet. As he enters the hole he seen that the planet really made of two places a spherical shell of negligible thickness of mass `(2M)/(3)` and a point mass `(M)/(3)` of centre. Change in the force of gravity experienced by the man is

A

`(2)/(3) (GMm)/(R^(2))`

B

0

C

`(1)/(2)(GMm)/(R^(2))`

D

`(4)/(3)(GMm)/(R^(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    MOTION|Exercise Exercise - 2 (Level - II) Multiple choice | JEE Advanced|12 Videos

  • GRAVITATION

    MOTION|Exercise Exercise - 3 | level - 1 (Subjective | JEE Advanced)|13 Videos

  • GRAVITATION

    MOTION|Exercise Exercise - 1 (Objective Problems | Jee Main|25 Videos

  • GEOMETRICAL OPTICS

    MOTION|Exercise Exercise - 4 | Level-II|55 Videos

  • HEAT - 1

    MOTION|Exercise EXERCISE -4 (Level - II) Previous Year | JEE Advanced|22 Videos

Similar Questions

Explore conceptually related problems

The angular velocity of rotation of a planet of mass M and radius R, at which the matter start to escape from its equator is

A particle of mass m is located inside a spherical shell of mass M and radius R. The gravitational force of attraction between them is

If v_(e) is the escape velocity of a body from a planet of mass 'M' and radius 'R . Then the velocity of the satellite revolving at height 'h' from the surface of the planet will be

Two satellites of mass M_A and M_B are revolving around a planet of mass M in radius R_A and R_B respectively. Then?

A particel of mass M is placed at the centre of a inform spherical shell of mass 2M and radius R. The gravitational potential on the surface of the shell is

At satellite of mass m is launched from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 3R. K.E. of satellite at the time of launching is

A thin spherical shell of mass M and radius R has a small hole. A particle of mass m released at its mouth. Then

A body of mass m at inifnity is approaching the centre of a hypothetical hollow planet of mass M and radius R . The speed of the body when it passes the centre of the planet through a diametrical tunnel is

A point mass m is placed inside a spherical shell of radius R and mass M at a distance R/2 form the centre of the shell. The gravitational force exerted by the shell on the point mass is