The length of the bar AP is 750mm. The radius of the pulley is 125mm, Equal forces T-75N are applied at the ends of the cable. What is the sum of the moments of the forces (a) about A and (b) about P. T 45° 45° 30°

The length of the bar AP is 750mm. The radius of the pulley is 125mm, Equal forces T-75N are applied at the ends of the cable. What is the sum of the moments of the forces (a) about A and (b) about P. T 45° 45° 30°

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 83P: What is the torque abot the origin of the force if it is applied at the point whose position is:

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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.

Question

The length of the bar AP is 750mm. The radius of the pulley is 125mm,
Equal forces T=75N are applied at the ends of the cable. What is the sum
of the moments of the forces (a) about A and (b) about P.
P
T
45°
45°
30°
T

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