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## Homework Statement

A string is wrapped around a pulley of radius 3.45cm , and a weight hangs from the other end. The weight falls with a constant acceleration 3.00m/s2 .

What's the angular acceleration of the pulley?

## Homework Equations

i'm writing out the equations i would think that are involved.

a=Δw/Δt

Centripital force Fr=mv^2/R ( i think)

Newtons second law

ω=ωi+at

## The Attempt at a Solution

I am just so stuck...and don't know how to start.

I drew out a free body diagram and Drew out the forces for the mass and pulley

For the mass all i have is the Tension and mg. there is no weight for the pully so all i have is tension

I would need to sum the forces right?