The large diameter and face of the disk of a multiple disk clutch are 255 mm and 25 mm respectively. The helical compression spring used to engage the clutch has 9.5 effective coils of 10 mm steel wire. The outer coil diameter is 80 mm. The free length of the spring is 185 mm. When in place with the clutch engaged, its length is 130 mm. Assuming that there are 10 pairs of friction surface in contact and the motors runs at 1200 rpm, with coefficient of friction on contact surface f = 0.15 determine the axial force available for the clutch if the spring modulus of rigidity is 80GN/m². a. 1.89 kN b. 1.99 kN c. 1.79 kN d. 1.69 kN www

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The large diameter and face of the disk of
a multiple disk clutch are 255 mm and 25
mm respectively. The helical compression
spring used to engage the clutch has 9.5
effective coils of 10 mm steel wire. The
outer coil diameter is 80 mm. The free
length of the spring is 185 mm. When in
place with the clutch engaged, its length
is 130 mm. Assuming that there are 10
pairs of friction surface in contact and the
motors runs at 1200 rpm, with coefficient
of friction on contact surface f = 0.15
determine the axial force available for the
clutch if the spring modulus of rigidity is
80GN/m².
a. 1.89 kN
b. 1.99 kN
c. 1.79 kN
d. 1.69 kN
Transcribed Image Text:The large diameter and face of the disk of a multiple disk clutch are 255 mm and 25 mm respectively. The helical compression spring used to engage the clutch has 9.5 effective coils of 10 mm steel wire. The outer coil diameter is 80 mm. The free length of the spring is 185 mm. When in place with the clutch engaged, its length is 130 mm. Assuming that there are 10 pairs of friction surface in contact and the motors runs at 1200 rpm, with coefficient of friction on contact surface f = 0.15 determine the axial force available for the clutch if the spring modulus of rigidity is 80GN/m². a. 1.89 kN b. 1.99 kN c. 1.79 kN d. 1.69 kN
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what's the formula for axial force?
can you cite some reference because I can't see that formula on internet

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