Two point masses and are separated by a distance and attract each other with a force

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two point masses

m_1

and

m_2

are separated by a distance

r

and attract each other with a force

F_0

. If

m_1

is made three times its original value while the separation is doubled, what will be the new force

F

in terms of

F_0

? (a)

\dfrac{9}{4}F_0

(b)

\dfrac{3}{4}F_0

(c)

\dfrac{3}{2}F_0

(d)

\dfrac{3}{8}F_0