Recent content by jtc143

  1. J

    Angular frequency of a pendulum

    Can someone explain to me how this was done? Is that the equation for the center of mass? Where did the number 0.5 come from? Thanks!
  2. J

    How Much Work Is Needed to Alter a Crate's Velocity?

    Never mind I figured it out. The angles mean nothing and you just do the work energy theorem normally. However, I'm not sure WHY this is so; can anyone explain why the angles do not effect the question?
  3. J

    How Much Work Is Needed to Alter a Crate's Velocity?

    Homework Statement A 34.0 kg crate is initially moving with a velocity that has magnitude 3.70 m/s in a direction 37.0 degrees west of north. How much work must be done on the crate to change its velocity to 6.08 m/s in a direction 63.0 degrees south of east? Homework Equations...