Question
In: Mechanical Engineering
A spring with a spring rate of 75 lb/in has a working deflection of 1 in....
A spring with a spring rate of 75 lb/in has a working deflection of 1 in. It provides a minimum of 150 lb at installation. The spring is formed from 0.25 in diameter unpeened music wire. The coil has squared and ground ends, and it fits in a 2.1 in diameter hole with 0.1 in clearance.
Assuming a 15% clash allowance, find:
a) Safety factor for infinite life in fatigue
b) Shut height
c) Safety factor at shut height
d) Total number of coils
e) Free length
Solutions
samet mamat answered 2 years agoRelated Solutions
A 128-lb weight is attached to a spring having a spring constant of 64 lb/ft. The...
A 128-lb weight is attached to a spring having a spring constant
of 64 lb/ft. The weight is started in motion with no initial
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Assuming no air resistance, find the equation of motion. b. What is
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1 A steel helical spring carries a compressive load of 32.4 pounds at a deflection of...
1 A steel helical spring carries a
compressive load of 32.4 pounds at a deflection of 0.25 inches.
Maximum stress is 73240psi. The spring has 1.5 end turns. Calculate
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Calculate the value of d and choose the nearest standard
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Also, calculate the material in the spring.
a. A force of 40 lb is necessary to hold a spring that has been stretched...
a. A force of 40 lb is necessary to hold a spring that has
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length of 10 ft to a length of 15 ft. How much work is done in
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Hook’s Law F = kx, where x represents distance that the spring is
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b. A tank full of water has the shape of an...
A mass is connected by means of a spring to an inelastic support. The static deflection...
A mass is connected by means of a spring to an inelastic
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and amplitude 10.0mm. Determine the amplitude of vibration of the
mass and phase angle if the damping is negligible.
The mass is now damped in an oil bath which exerts a resistance
proportional to velocity, and the spring anchorage is oscillated as
before. It...
An industrial machine weighing 1000 lb is supported by springs with a static deflection of 0.20...
An industrial machine weighing 1000 lb is supported by springs
with a static deflection of 0.20 inches. The machine has a rotary
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If an undamped spring-mass system with a mass that weighs 24 lb and a spring constant...
If an undamped spring-mass system with a mass that weighs 24 lb
and a spring constant 9 lbin is suddenly set in motion at t=0 by an
external force of 180cos(8t) lb, determine the position of the mass
at any time. Assume that g=32 fts2. Solve for u in feet.
If an undamped spring-mass system with a mass that weighs 6 lb and a spring constant...
If an undamped spring-mass system with a mass that weighs 6 lb
and a spring constant 9 lb/in is suddenly set in motion at t=0 by
an external force of 99cos(20t) lb, determine the position of the
mass at any time. Assume that g=32 ft/s2. Solve for u in feet.
If an undamped spring-mass system with a mass that weighs 6 lb and a spring constant...
If an undamped spring-mass system with a mass that weighs 6 lb
and a spring constant 9 lbin is suddenly set in motion at t=0 by an
external force of 33cos(20t) lb, determine the position of the mass
at any time. Assume that g=32 fts2. Solve for u in feet.
Enclose arguments of functions in parentheses. For example,
sin(2x).
u(t)=?
If an undamped spring-mass system with a mass that weighs 24 lb and a spring constant...
If an undamped spring-mass system with a mass that weighs 24 lb
and a spring constant 9 lbin is suddenly set in motion at t=0 by an
external force of 288cos(4t) lb, determine the position of the mass
at any time. Assume that g=32 fts2. Solve for u in feet.
Enclose arguments of functions in parentheses. For example,
sin(2x).
If an undamped spring-mass system with a mass that weighs 6 lb and a spring constant...
If an undamped spring-mass system with a mass that weighs 6 lb
and a spring constant 4 lbin is suddenly set in motion at t=0 by an
external force of 63cos(12t) lb, determine the position of the mass
at any time. Assume that g=32 fts2. Solve for u in feet.
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