For the given figure, the weight of the 9-ft bar is 5 Ib. The moment of the tension in the cord about the fulcrum (point O) is:L3'4.12 15

Given: The weight of the bar is 5 lb. The length of the bar is 9 ft.

Answered: For the given figure, the weight of the…

For the given figure, the weight of the 9-ft bar is 5 lb. The moment of the tension in the cord about the fulcrum (point O) is: L 3' 12 15

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 19CQ: What three factors affect the torque created by a force relative to a specific pivot point?

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

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For the given figure, the weight of the 9-ft bar is 5 Ib. The moment of the tension in the cord about the fulcrum (point O) is:
L
3'
4.
12 15

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