Earth's centripetal acceleration around the Sun

[hrice]

Homework Statement

The Earth has a mass of 6 x 10 24kg and orbits the sun in 3.15 x 10 7 seconds at a constant circular distance of 1.5 x 10 11 m. What is the Earth's centripetal acceleration around the Sun?

Homework Equations

The Attempt at a Solution

 

[PeterO]

Homework Statement

The Earth has a mass of 6 x 10 24kg and orbits the sun in 3.15 x 10 7 seconds at a constant circular distance of 1.5 x 10 11 m. What is the Earth's centripetal acceleration around the Sun?

Homework Equations

The Attempt at a Solution

What are the two most common formulae/expressions for centripetal acceleration? One of them is more appropriate for the date you are working with.