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July 22, 2014

July 22, 2014

Posted by **basit shah** on Friday, July 29, 2011 at 4:16pm.

A. 40j

B. 88j

C. 45j

D. 0j

E. None of these

- szabist imc larkana -
**Damon**, Friday, July 29, 2011 at 5:44pmoriginal height of center of mass = 3 cm

final height of center of mass = 5^6 = 30cm

change in height of GC = 30-3 = 27 cm=.27m

work = m g h = 15 * 9.8 * .27 = 39.69 or 40 J so A

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