MHT-CET : Physics Entrance Exam

### MHT - CET : Physics - Gravitation Formulae Page 1

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1. Newton's Law of Gravitation

 F = Gm1m2 r2

 Where F - gravitational force of attraction m1, m2 - masses of the bodies r - distance between bodies G - gravitational constant

2. Acceleration Due to Gravity

a)

 g = GM R2

 Where, g - acceleration due to gravity at the surface M - mass of the earth R - radius of the earth

b)

 g' = GM (R + h)2

 Where, g' - acceleration due to gravity at a height h above the surface of the earth

c)

 g' = g R 2 (R + h)

3. Critical Velocity

a)

 Vc =

b)

 Vc =

c)

 Vc =

d)

 Vc = 2R

Where, r - mean density of the earth.

4. Time Period

a)

 T =

 b) T2 a r3 Where, r - radius of the orbit of the satellite.

5. Binding Energy

a)

B.E. =

 GMm R

When body is at rest on the surface of the earth.

b)

 B.E. = GMm 2(R + h)

Binding energy of the satellite.

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