(adsbygoogle = window.adsbygoogle || []).push({}); URGENT: rotatonal KE

Two astronauts each having a mass of 54 kg are connected by a 10 m rope of negligible mass. They are isolated in space, orbiting about their centre of mass at speeds of 3.7 m/s. Calculate the rotational energy of the two astronauts.

A. 739.3 J

B. 1478.5 J

C. 29.6 J

D. 317.9 J

E. 369.6 J

Which one is it?????

I did:

KE= 1/2 (I + I) omega ^2

and it turned out to be A. Is it correct???

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: : rotatonal KE

**Physics Forums | Science Articles, Homework Help, Discussion**