To close a gate valve it is necessary to exert two forces of 60 lb. at opposite sides of a handwheel 3 ft. in diameter. Through an accident the wheel is broken and the valve must be closed by a thrusting bar through a slot in the valve stem and exerting a force 4 ft. out from the center. Determine the force required and draw a free-body diagram of the bar.

To close a gate valve it is necessary to exert two forces of 60 lb. at opposite sides of a handwheel 3 ft. in diameter. Through an accident the wheel is broken and the valve must be closed by a thrusting bar through a slot in the valve stem and exerting a force 4 ft. out from the center. Determine the force required and draw a free-body diagram of the bar.

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter5: Three-dimensional Equilibrium

Section: Chapter Questions

Problem 5.42P: The 350-lb homogeneous plate has the shape of an isosceles triangle. The plate is supported by a...

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