- #1
shanepitts
- 84
- 1
Homework Statement
Homework Equations
(mv2)/r=(GMm)/r2 --------(1)
r≈8kpc≈2.47×1020m
v≈220kms-1
The Attempt at a Solution
Using equation (1) and solving for M I got
M=(v2r)/G=(4.84×10102.47×1020)/6.67×10-11
M=1.79×1041 kg
does this answer seem correct?
P.S. This is not a homework assignment, it's an exercise from an introductory book I'm reading.