A star `2.5` times the mass of the sun is reduced to a size of `12km` and rotates with a speed of `1.5rps.` Will an object placed on its equator remain stuck to its surface due to gravity? (Mass of the sun `=2xx10^(30) kg`)

A star 2.5 times the mass of the sun and collapsed to a size of the 12 km rotates with a speed of 1.5 rev.per second. (Extremely compact stars of this kind are known as neutron stars. Centain onserved steller objects called pulsars are believed to belong this category ). Will an object placed on its equator remain struck to its surface due to gravity ? (Mass of the sun = 2 xx 10^(30) kg) .

A spaceship is stationed on mars. How much energy must be expended on the spaceship to launch it out of this kind are known as neutron stars. Certain steller objects called pulsars belong to this categor). Will an object placed on its equator remain stuck to its surface due to gravity? (mass of the sun =2xx10^(30)kg ).

A star 2.5 times the mass of the sun and collapsed to a size of 12km rotates with a speed of 1.2 rev. per second. (Extremely compact stars of this kind are known as neutron stars. Certain stellar object called pulsars belong to this category). Will an neutron stars. Certainstellar objects called pulsars belong to this category). will an object placed on its equator remain stuck to its surface due to gravity? (mass of the sun =2xx10^(40)kg ).

An extremely small and dense neutron star of mass M and radius R is rotating with angular velocity omega . If an object is placed at its equator, then it will remain stuck to it due to gravity, if

A particle moves with a speed of 1.5 xx10^(8) m/s. The ratio of its mass to its rest mass is

If a particle moves with a speed of 1.5 xx 10^(8) m/s then the ratio of its mass to its rest mass is

A planet has a mass of eight time the mass of earth and denisity is also equal to eight times a the average density of the earth. If g be the acceleration due to earth's gravity on its surface, then acceleration due to gravity on planet's surface will be

Consider a white dwarf and a nutron star beach of one solar mass. The radius of the white dwarf is same as that of the eartyh (=6400km) and the radius of the neutron star is 10 km. Determine the densities of the two types of the stars. Take mass of the sun =2.0xx10^(30) kg.

Assuming the mass of Earth to be ten times the mass of Mars, its radius to be twice the radius of Mars and the acceleration due to gravity on the surface of Earth is 10 m//s^(2) . Then the accelration due to gravity on the surface of Mars is given by

If a sphere of mass 2kg and diameter 10cm is rolling at speed of 5ms^(-1). Its rotational kinetic energy is