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6.3 Torque

Chapter 6: Concurrent and Parallel Forces ( Ewen et al. 2005). 6.3 Torque. Objectives: Define torque. Solve rotational problems using the formal definition of torque. Definition of Torque. Torque is the tendency to produce change in rotational motion.

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6.3 Torque

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  1. Chapter 6: Concurrent and Parallel Forces (Ewen et al. 2005) 6.3 Torque • Objectives: • Define torque. • Solve rotational problems using the formal definition of torque.

  2. Definition of Torque • 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) • st = length of the torque arm (in m or ft)

  3. The torque arm (st) is the perpendicular distance from the point of rotation to the applied force. F F st st

  4. Example • 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.

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