(3) A circular cam 8-in in diameter rotates off-center with an eccentrity e = 1” & operates the roller follower that is carried by the arm. The roller follower is held against the cam by means of a tension spring attached a third from a fixed pivot point. The force against the cam & roller follower is approximately 50lb @ the low position & 80lb @ high position. The ratio of the coil diameter to that of wire diameter is 7.0. The allowable stress on the spring is Ss = 60,000psi. Calculate : (a) the wire diameter; (b) the outside diameter of spring; (c) the number of active coils recommended.
(3) A circular cam 8-in in diameter rotates off-center with an eccentrity e = 1” & operates the roller follower that is carried by the arm. The roller follower is held against the cam by means of a tension spring attached a third from a fixed pivot point. The force against the cam & roller follower is approximately 50lb @ the low position & 80lb @ high position. The ratio of the coil diameter to that of wire diameter is 7.0. The allowable stress on the spring is Ss = 60,000psi. Calculate : (a) the wire diameter; (b) the outside diameter of spring; (c) the number of active coils recommended.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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(3) A circular cam 8-in in diameter rotates off-center with an eccentrity e = 1” & operates the roller
follower that is carried by the arm. The roller follower is held against the cam by means of a tension
spring attached a third from a fixed pivot point. The
force against the cam & roller follower is
approximately 50lb @ the low position & 80lb @
high position. The ratio of the coil diameter to that of
wire diameter is 7.0. The allowable stress on the
spring is Ss = 60,000psi. Calculate :
(a) the wire diameter;
(b) the outside diameter of spring;
(c) the number of active coils recommended.
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