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## Homework Statement

to a good approximation, the moon can be considered to be travelling in a circle centred at the earth and the earth can be considered to be travelling in a circle centred at the sun. determine the magnitude of the moons acceleration relative to the sun

a)when the moon is between the earth and the sun

b)when the earth is between the moon and sun

## Homework Equations

## The Attempt at a Solution

hello & greetings all

i am very stuck in the problem above

may i ask, to find the required answer do i need to use the equation -gmM/r^2 and work out the effective gravitational pull or is it circular motion?

i am very stuck and any help would be muchly appreciated :(