- #1

- 10

- 0

A) 7.1

B) 8.5

C) 9.2

D) 10

E) 6.4

this is what i did: the moment of a thick disk is I = 1/2 MR^2... I THINK you could use that to find the mass of the merry-goat-round...but...if he jumps directly towards the center...does that have any impact on the rotational speed? I don't think it does.

i would think the answer would be 10 but my friend got a different solution...is there anyway that someone can help telling what they got?