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## Homework Statement

A turntable has a moment of inertia of 2.5 x 10-2 kg m2 and spins freely at 33.3 rev/min. A 0.25 kg ball of putty is dropped vertically on the turntable at a point 0.20 m from the center. What is the new angular speed of the system?

a. 41 rev/min

b. 24 rev/min

c. 33 rev/min

d. 27 rev/min

## Homework Equations

L=Iω

p=mv

L=r*p

## The Attempt at a Solution

i tried to do Iω=(I+mr)ω(final)

i got 27 rev/min

the real answer is supposed to be 24rev/min according to the answer key