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Sahay Sir > Question Answers > NCERT Exemplar Class 11 > Physics > Chapter 7 - Gravitation > A star 2.5 times the mass of the sun and collapsed to a size of the 12km rotates with a speed of 1.5 rev per second. (Extremely compact stars of this kind are known as neutron stars. Certain observed stellar 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 =2×10^30kg).

A star 2.5 times the mass of the sun and collapsed to a size of the 12km rotates with a speed of 1.5 rev per second. (Extremely compact stars of this kind are known as neutron stars. Certain observed stellar 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 =2×10^30kg).

How will you 'weigh the sun' that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5×10^8 km.