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: Force and motion question

  1. Sep 25, 2010 #1
    this is the problem:

    A motorcycle and 63.6 kg rider accelerate at 3.1 m/s2 up a ramp inclined 9.1° above the horizontal. What are the magnitude of (a) the net force on the rider and (b) the force on the rider from the motorcycle?

    I solved for a)

    F=ma
    = (63.6 kg)(3.1 m/s^2)
    = 197.16 N

    But I don't understand what b) means by the "force on the rider from the motorcycle"
     
  2. jcsd
  3. Sep 25, 2010 #2

    Doc Al

    User Avatar

    Staff: Mentor

    The force that the motorcycle exerts on the rider is just one force. What other forces act on the rider? (They all must add up to the net force, which you already calculated.)
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook