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Satellites

An earth sate...

Question

An earth satellite is moving round the earth in a circular orbit. For such a satellite which of the following statement is wrong?

It is a freely falling body

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It is moving with a constant speed

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It suffers no acceleration

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Its angular momentum about the centre of the earth remains constant

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Solution

The correct option is B It suffers no acceleration
As satellite is moving in a circular motion due to change in the direction of velocity. Its angular momentum about centre is conserved as their is no external force acting on the system.

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A satellite goes round the earth in a circular orbit with constant speed. Is the motion uniform or accelerated ?

1

2

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4

R

m

r

M

G

k m / s e c

g = 10 m / s^{2}

R = 6400 k m

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