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When a force Facts on an object at some distance r from a point P, called the pivot point, it can cause the object to rotate rather than translate. The ability of a force to cause rotation is called the torque about P due to the force F and is symbolized by the Greek lowercase letter tau T. Torque equals the cross product between the applied force F and the distance vector r = PQ that points from P to the point Q where F acts on the object. That is, T=rxF Suppose a person lifting a weight extends his arm upward at 40° above the horizontal while holding a 74-N (about 17-lb) weight in his hand. His arm is 66 cm long from the shoulder socket to the weight. What is the magnitude of the torque? 40°

When a force Facts on an object at some distance r from a point P, called the pivot point, it can cause the object to rotate rather than translate. The ability of a force to cause rotation is called the torque about P due to the force F and is symbolized by the Greek lowercase letter tau T. Torque equals the cross product between the applied force F and the distance vector r = PQ that points from P to the point Q where F acts on the object. That is, T=rxF Suppose a person lifting a weight extends his arm upward at 40° above the horizontal while holding a 74-N (about 17-lb) weight in his hand. His arm is 66 cm long from the shoulder socket to the weight. What is the magnitude of the torque? 40°

Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 5OQ: Assume a single 300-N force is exerted on a bicycle frame as shown in Figure OQ10.5. Consider the...
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When a force F acts on an object at some distance r from a point P, called the pivot point, it can cause the object to rotate rather than translate. The ability of a force to cause rotation is called the torque about P due to the force F and is symbolized by the Greek lowercase letter tau T. Torque equals the cross product between the applied force F and the distance vector r = PQ that points from P to the point Q where F acts on the object. That is, T=rxF Suppose a person lifting a weight extends his arm upward at 40° above the horizontal while holding a 74-N (about 17-lb) weight in his hand. His arm is 66 cm long from the shoulder socket to the weight. What is the magnitude of the torque? 40°
Transcribed Image Text:When a force F acts on an object at some distance r from a point P, called the pivot point, it can cause the object to rotate rather than translate. The ability of a force to cause rotation is called the torque about P due to the force F and is symbolized by the Greek lowercase letter tau T. Torque equals the cross product between the applied force F and the distance vector r = PQ that points from P to the point Q where F acts on the object. That is, T=rxF Suppose a person lifting a weight extends his arm upward at 40° above the horizontal while holding a 74-N (about 17-lb) weight in his hand. His arm is 66 cm long from the shoulder socket to the weight. What is the magnitude of the torque? 40°
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