1. Chapter 6: Concurrent and Parallel Forces (Ewen et al. 2005) Objectives: Define torque. Define torque. Solve rotational problems using the formal definition of torque. Solve rotational problems using the formal definition of torque.

2.  Torque is the tendency to produce change in rotational motion.  Torque depends on (1) the amount of force applied and (2) how far the point of rotation is from the force. where ▪  = torque (in N  m or lb  ft) ▪ F = applied force (in N or lb) ▪ s t = length of the torque arm (in m or ft)

3.  The torque arm (s t ) is the perpendicular distance from the point of rotation to the applied force. F stst F stst

4.  A force of 10.0 lb is applied to a bicycle pedal. If the length of the pedal arm is 0.850 ft, what torque is applied to the sprocket.