12 mm |T, Prob. 4-22

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Old clocks were constructed using a fusee B to drive
the gears and watch hands. The purpose of the fusee is to
increase the leverage developed by the mainspring A as it
uncoils and thereby loses some of its tension. The
mainspring can develop a torque (moment) Ts = , where
k = 0.015 N ⋅ m/rad is the torsional stiffness and θ is the
angle of twist of the spring in radians. If the torque Tf
developed by the fusee is to remain constant as the
mainspring winds down, and x = 10 mm when θ = 4 rad,
determine the required radius of the fusee when θ = 3 rad.

12 mm
|T,
Prob. 4-22
Transcribed Image Text:12 mm |T, Prob. 4-22
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