A ball is hanging from a long string that is tied to the ceiling of a train car traveling eastward on horizontal tracks. An observer inside the train car sees the ball hang motionless.(adsbygoogle = window.adsbygoogle || []).push({});

Draw a clearly labeled free-body diagram for the ball if the train has a uniform velocity.

i drew two vectors, but it says i got it wrong. both of my vectors are equal in lenth and are 180 degrees apart.

here's my answer image: http://i53.tinypic.com/21et2za.jpg

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

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: Simple vector train problem drawing

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