A rope passes over a frictionless pulley at B as shown. (a) If the mass of the body C is 40 kg, what must be the mass of body A to hold the assembly in the position shown. (b) What is the tension in DE? B 30° D A

A rope passes over a frictionless pulley at B as shown. (a) If the mass of the body C is 40 kg, what must be the mass of body A to hold the assembly in the position shown. (b) What is the tension in DE? B 30° D A

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 117AP: Two children push on opposite sides of a door during play. Both push horizontally and perpendicular...

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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

A rope passes over a frictionless pulley at B
as shown. (a) If the mass of the body C is 40
kg, what must be the mass of body A to hold
the assembly in the position shown. (b) What
is the tension in DE?
В
30°
E
D
A

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