Three crates are kept in static equilibrium by the frictionless rope-pulley-spring arrangements (a)-(c), shown in the figure. Each rope supports a constant tension force, T, of 100 lb. The mass of each pulley in the system is 0.5 şlug. The unstretched lengths of the springs in arrangements (a)-(c) are 32 in, 36 in, and 40 in, respectively, and each spring has a stiffness of k = 150 lb/ft. Assuming all ropes are oriented perfectly vertically, and that the thin link that connects the pulleys to the crates can only support a force along the vertical axis, calculate the masses of each crate in arrangements (a)-(c). 36 in (a) (b) VT (c)

Three crates are kept in static equilibrium by the frictionless rope-pulley-spring arrangements (a)-(c), shown in the figure. Each rope supports a constant tension force, T, of 100 lb. The mass of each pulley in the system is 0.5 şlug. The unstretched lengths of the springs in arrangements (a)-(c) are 32 in, 36 in, and 40 in, respectively, and each spring has a stiffness of k = 150 lb/ft. Assuming all ropes are oriented perfectly vertically, and that the thin link that connects the pulleys to the crates can only support a force along the vertical axis, calculate the masses of each crate in arrangements (a)-(c). 36 in (a) (b) VT (c)

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter10: Virtual Work And Potential Energy

Section: Chapter Questions

Problem 10.62P: The bar ABC is supported by three identical, ideal springs. Note that the springs are always...

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