Question

The magnitude of gravitational field at distance r1 and r2 from the centre of a uniform sphere of radius R and mass M are F1 and F2 . If r1>R and r2

Answer 1

Answer:

We know, F=

r

2

GM

,ifr≥R

Force is inversely proportional to r

2

. When $$r\ge R$$.

So,

F

2

F

1

=

r

1

2

r

2

2

When,r

1

≥R,r

2

≥R

again,F=

R

3

GMr

,Whenr≥R

Force is directly proportional to r. When

r<R

hence,

F

2

F

1

=

r

2

r

1

when,r

1

<R,r

2

<R

Answer 2

Explanation:

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