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2 cards from this section. Quick, good the night before a test.
What is the wire diameter if tp = 5 mm in a helical spring?
Review the definitions of parameters used in shear stress calculation.
If the mean coil diameter of a spring is 100 mm, what is its role?
Consider the equation for shear stress.
The formula for shear stress in helical springs is τ = 8PD/(πd³). What does P represent?
Think about the forces applied to the spring.
True or False: The number of active coils affects the deflection of a helical spring.
Consider how springs work under load.
A mechanical design requires a helical spring to withstand a maximum load of 600 N with a permissible shear stress of 350 MPa. Using a wire diameter of 8 mm, calculate the mean coil diameter needed to ensure safety.
Don't forget to convert units correctly.
You have a spring with 15 active coils, 3 mm wire diameter, and you want to calculate how much deflection it will undergo under a load of 200 N, with a shear modulus of 90 GPa. What is the deflection?
Ensure that all measurements are in metric units.
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