A wagon weighing 5100 Kg moving at a speed of 8 km/h has to be brought to rest. Springs made of wire diameter 25mm with a Dm of 250mm and with 24 turns are available. Find the number of springs required in buffer to stop the wagon at a compression of 180mm. b) A close coiled helical spring is made of diameter wire 25mm. The spring index is 8. Find the number of turns required and maximum allowable load if the allowable shear stress is 100 MPa and elongation is limited to 40mm. [G=80 GPa

A wagon weighing 5100 Kg moving at a speed of 8 km/h has to be brought to rest. Springs made of wire diameter 25mm with a Dm of 250mm and with 24 turns are available. Find the number of springs required in buffer to stop the wagon at a compression of 180mm. b) A close coiled helical spring is made of diameter wire 25mm. The spring index is 8. Find the number of turns required and maximum allowable load if the allowable shear stress is 100 MPa and elongation is limited to 40mm. [G=80 GPa

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.70P: Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at...

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