Chapter 10 – Gravitation

The mean distance of Mars from the sun in 1.5 times that of the Earth from the sun. What is approximately the number of years requires for Mars make one revolution about the Sun. The mean distance of Mars from the sun in 1.5 times that of the Earth from the sun. What is approximately [...]

A system of binary stars of masses MA and MB are moving in circular orbits of radii RA and RB respectively. If TA and TB are the time periods of masses MA and MB respectively, then A system of binary stars of masses MA and MB are moving in circular orbits of radii RA and [...]

A binary star system consists of two stars. One star has twice the mass of the other. The star rotates about their common centre of mass. Which of the following statements is correct ? A binary star system consists of two stars. One star has twice the mass of the other. The star rotates about [...]

The gravitational field in a region is given by E = (4i^+ j^ )N/kg. Work done by this field is zero when a particle is moved along the line The gravitational field in a region is given by E = (4i^+ j^ )N/kg. Work done by this field is zero when a particle is moved [...]

The gravitational field due to a mass distribution is E = A/x2 If potential at infinity is zero and A be a constant. Then the potential at x is The gravitational field due to a mass distribution is E = A/x2 If potential at infinity is zero and A be a constant. Then the potential [...]

A planet of small mass m moves around the sun of mass M along an elliptical orbit such that its minimum and maximum distance from sun are r and R respectively. Its period of revolution will be: A planet of small mass m moves around the sun of mass M along an elliptical orbit such [...]

A satellite revolving in a circular equatorial orbit from west to east appears over a certain point on the equator every 8 hours therefore it’s period is A satellite revolving in a circular equatorial orbit from west to east appears over a certain point on the equator every 8 hours therefore it's period is September [...]

Two bodies, each of mass M, are kept fixed with a separation 2L. A particle of mass m is projected from the midpoint of the line joining their centres, perpendicular to the line. The gravitational constant is G. The correct statement is are kept fixed with a separation 2L. A particle of mass m is [...]

Two rings having masses M and 2M, respectively, having the same radius are placed coaxially as shown in the figure. If the mass distribution on both the rings is non-uniform, then the gravitational potential at point P is? having the same radius are placed coaxially as shown in the figure. If the mass distribution on [...]

Two concentric shells have masses M and m and their radii are R and r, respectively, where R>r. What is the gravitational potential at their common centre? respectively Two concentric shells have masses M and m and their radii are R and r where R>r. What is the gravitational potential at their common centre? September [...]