9/19/13, Thursday

Post date: Sep 19, 2013 12:57:0 PM

Bell Ringer

• • A box on a 20.0^o ramp experiences three forces. F_gravity = 150 N, F_normal = 140.95 N, and F_friction = 51.3 N. Draw a free body diagram and calculate the net force on the box. Is the box accelerating?

Activities

• • Bell ringer

  • Statics problems, Equillibrium, finding the equillibrant

  • Newton's 2nd law

Practice

• • Page 129: 1-5