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भौतिक विज्ञान हैण्ड रिटेन नोट्स : रेलवे परीक्षा हेतु पीडीऍफ़ बुक | Physics Hand Written Notes : For Railway Exam PDF Book

भौतिक विज्ञान हैण्ड रिटेन नोट्स : रेलवे परीक्षा हेतु पीडीऍफ़ बुक | Physics Hand Written Notes : For Railway Exam PDF Book


Name of Book :  Physics Hand Written Notes / भौतिक विज्ञान हैण्ड रिटेन नोट्स 

Hope This Physics Hand Written Notes Book will Step up you to Succeed / आशा करते हैं भौतिक विज्ञान हैण्ड रिटेन नोट्स पुस्तक आपके कदम सफलता की ओर ले जायगी

Language of Book : English

Size of Ebook : 17.6 MB

Total pages in ebook : 56

Ebook Downloading Status  : Best 
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Description about eBook : GRAVITATION
  • Everybody in the universe attracts other body by a force called force of gravitation.
  • The gravitational force of the earth is called gravity.
  • The acceleration produced in a body due to force of gravity is called acceleration due to gravity (g) and
  • its value is 9.8 m/s'.
  • Acceleration due to gravity is independent of shape, size and mass of the body.
  • Escape velocity is the minimum velocity with, which an object just crosses the Earth's gravitational field and never returns. Escape velocity at the Earth's surface is 11.2 km/s.
  • Escape velocity at the Moon's surface is 2.4 km/s.
  • Due to low escape velocity there is no atmosphere on the moon.
  • Value of g decreases with height or depth from Earth surface.
  • g is maximum at poles.
  • g is minimum at equator.
  • g decreases due to rotation of Earth.
  • g decreases if angular speed of Earth increases and increases if angular speed of Earth decreases.
  • The acceleration due to gravity at the moon is one- sixth that of the Earth. So, the weight of a person on the surface of the moon will be 1/6 of his actual weight on the Earth............

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