73. ssm A rotating door is made from four rectangular sections, as indicated in the draw- ing. The mass of each section is 85 kg. A per- son pushes on the outer edge of one section with a force of F = 68 N that is directed per- pendicular to the section. Determine the mag- nitude of the door's angular acceleration. 1.2 m F Problem 73 1.2 m

73. ssm A rotating door is made from four rectangular sections, as indicated in the draw- ing. The mass of each section is 85 kg. A per- son pushes on the outer edge of one section with a force of F = 68 N that is directed per- pendicular to the section. Determine the mag- nitude of the door's angular acceleration. 1.2 m F Problem 73 1.2 m

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 20P: A boy rides his bicycle 2.00 km. The wheels have radius 30.0 cm. What is the total angle the tires...

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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

Physics Ch. 9 #73

Please see attached image

73. ssm A rotating door is made from four
rectangular sections, as indicated in the draw-
ing. The mass of each section is 85 kg. A per-
son pushes on the outer edge of one section
with a force of F = 68 N that is directed per-
pendicular to the section. Determine the mag-
nitude of the door's angular acceleration.
1.2 m
F
Problem 73
1.2 m

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