A satellite is revolving around the sun in a circular orbit with uniform velocity v. If the gravitational force suddenly disappears, the velocity of the satellite will be

  • Option 1)

    zero

  • Option 2)

    v

  • Option 3)

    2 v

  • Option 4)

    infinity

 

Answers (1)

As we learnt in 

Orbital velocity when satellite is close to earth -

V=\sqrt{\frac{GM}{R}}=\sqrt{gR}

V=\sqrt{9.8\times 6.4\times 10^{6}}

=7.9Km/s\; \simeq 8Km/s

V\rightarrow Orbital velocity

g\rightarrow9.8M/s^{2}

R\rightarrow Radius of Earth 

- wherein

As  h=0 and  GM=gR^{2}

 

 Velocity of satellite will remain same as v but it will move along tangential direction.


Option 1)

zero

This is incorrect option

Option 2)

v

This is correct option

Option 3)

2 v

This is incorrect option

Option 4)

infinity

This is incorrect option

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