Explanation Both fingers are applying an upward force on the meter stick. One to the left of the center and one to the right of the center. Since these forces are not directed through the center of mass of the meter stick. All forces produce a torque on the stick. Since, the stick does not begin to rotate or the stick is balanced. These two torques must balance each other out. If both fingers produce the same torque but are applied at different distances from the center. The finger closer to the center of the meter stick must be applying force. Write the expression for torque for this case as. τ = F d sin 90 °

Physics for Scientists and Engineers with Modern Physics, Technology Update

9th Edition

ISBN: 9781305401969

Author: SERWAY, Raymond A.; Jewett, John W.

Publisher: Cengage Learning

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Chapter 10, Problem 16CQ

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Explain the reason of the stick remains balanced, and the two fingers always meet at the 50 cm mark regardless of their original positions.

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Chapter 10, Problem 15CQ

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Physics for Scientists and Engineers with Modern Physics, Technology Update

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Explain the reason of the stick remains balanced, and the two fingers always meet at the 50 cm mark regardless of their original positions.

Solution Summary: The author explains that torque produced by the two fingers is responsible to make meter stick balanced.

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Explain the reason of the stick remains balanced, and the two fingers always meet at the 50 cm mark regardless of their original positions.

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Chapter 10 Solutions