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Q.

A body is suspended from a spring balance kept in a satellite. The reading of the balance is W1 when the satellite goes in an orbit of radius R and is W2 when it goes in an orbit of radius 2R.

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a

W1 = W2

b

W1 < W2

c

W1> W2

d

W1 W2

answer is A.

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Detailed Solution

Acceleration of the satellite is radially inward , it is centripetal acceleration.So the satellite is a non-inertial frame.Therefore a radially outward pseudo force (Centrifugal force) acts on the suspended body. This Pseudo force balances the gravitational pull on the suspended body .So the body will experience weightlessness.

.: W1 = W2 =0

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