*This preview shows
page 1. Sign up
to
view the full content.*

**Unformatted text preview: **. 2 3 ) ( 2 ) 2 ( 2 ) 2 ( 2 1 2 2 2 2 2 2 2 Mv Mv R v MR R v R M Mv K = + + + = This kinetic energy must be the work done by gravity; if the hanging mass descends a distance y , . ) 3 2 ( or , 2 gy v Mgy K = = For constant acceleration, , 2 2 ay v = and comparison of the two expressions gives . 3 g a =...

View
Full
Document