Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Torque on a rod

  1. Apr 30, 2010 #1
    A 20 Kg slender rod pivoted at its center has a length of 6 m. A motor applied a torque of 2400 Nm on the rod to turn it from rest.
    (a) Find the average power by the motor when the rod rotates an angle of 500 rad. _____________________
    (b) Find the instantaneous power of the motor at the moment that the rod rotates an angle of 500 rad. ______________________

    I am unsure how to start this.
     
  2. jcsd
  3. Apr 30, 2010 #2
    You should at least list some formulas you think you might need. For example, a formula for power at least.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook