# Torque - Torque Suppose a force F is applied to point A(see...

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Torque Suppose a force F is applied to point A (see Figure 11.6). Point A is part of a rigid body with an axis of rotation going through the origin. Suppose the angle between the force F and the position vector r is [phi]. The force F can be decomposed into two components: one parallel to the position vector and one perpendicular to the position vector. It is obvious that the component parallel to the position vector can not cause a rotation of the rigid body. The magnitude of the component of the force perpendicular to the position vector is given by Figure 11.6. Torque The tangential component of the applied force F will produce a rotation of the object; the actual angular velocity will depend not only on the applied force but also on the distance between the axis of rotation and point A. To describe the effect of the force, the concept of torque is introduced. The tangential component of F, F t , will produce a tangential acceleration a t The torque [tau] can be rewritten as The tangential acceleration a

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Torque - Torque Suppose a force F is applied to point A(see...

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