Gravitation — Chapter Summary

Every object in the universe attracts

Every object in the universe attracts every other object with a force directly proportional to the product of their masses and inversely proportional

The acceleration experienced by a body

The acceleration experienced by a body due to Earth's gravitational pull is called 'g'. It is given by \( g = G \frac{M}{R^2} \), where M is Earth's m

The value of 'g' decreases

The value of 'g' decreases with height and depth from Earth's surface. It is maximum at poles and minimum at the equator due to Earth's rotation and s

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1. Planets move in elliptical orbits with the Sun at one focus. 2. The line joining a planet to the Sun sweeps equal areas in equal times. 3. The squa

Orbital velocity is the speed required

Orbital velocity is the speed required for a satellite to revolve around Earth: \( v_o = \sqrt{\frac{GM}{R+h}} \). Escape velocity is the minimum spee