When a sail is hoisted, the rope or halyard passes over a pulley and down the mast, where it is often wrapped around a cleat at the bottom. to effect the final tightening the halyard is grasped at the middle, if possible, and pulled away from the mast, after which the slack so gained is taken up at the cleat. If the halyard is 20 m from pulley to cleat and is pulled at the middle, so that it is 1.0 m out from the mast, with a force of 20 N, what is the tension in the halyard?

When a sail is hoisted, the rope or halyard passes over a pulley and down the mast, where it is often wrapped around a cleat at the bottom. to effect the final tightening the halyard is grasped at the middle, if possible, and pulled away from the mast, after which the slack so gained is taken up at the cleat. If the halyard is 20 m from pulley to cleat and is pulled at the middle, so that it is 1.0 m out from the mast, with a force of 20 N, what is the tension in the halyard?

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter6: Beams And Cables

Section: Chapter Questions

Problem 6.75P: The end of a water hose weighing 0.5 lb/ft is pulled with a 40-lb force that is inclined at 14 to...

See similar textbooks

Similar questions

The 24-ft timber ï¬‚oor joist is designed to carry a uniformly distributed load. Because only 16-ft timbers are available, the joist is to be fabricated from two pieces connected by a nailed joint D. Determine the distance b for the most advantageous position of the joint D, knowing that nailed joints are strong in shear but weak in bending.
A bike chain can support a tension of no more than 9800 N. The pedal connects to a crank 17 cm from the axle, and the gear pulling the chain has a 9.1 cm radius. When riding at a constant speed, with the crank and pedal horizontal, as shown, what is the maximum force that can be applied to the pedal before the chain breaks?
A lubricated bolt needs an initial torque of 145 lb-ft to take the initial tension brought by the compressor withoutbreaking. Determine the initial torque needed by the bolt if the bolt was not lubricated.A. 107.85 lb-ft B.108.25 lb-ft C. 108.75 lb-ft D. 193.33 lb-ft
The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
he region of safety in maximum shear stress theory contains which of the given shape *
How can the shear force, be determined from the method of sections andthe equations of equilibrium?
Two masses of 80 ?? are suspended by wires that are 3 ?? in diameter. One wire is of aluminum and the other is of steel. The wires are 8 ?????? long. How much lower will the mass held by the aluminum wire be?
Shaft and flange connections are provided by wedge in a system that transmits moment with flange coupling. The tangential force of the wedge is 40000 N and the diameter of the shaft used in the system is 40 mm and the diameter of the placement circle of the Bolts in the flange connection is 100 mm. Determine how many M16 (d1=13,546 mm) bolts should be used according to the moment transfer by cutting the Bolts between the flange surfaces. (The coefficient of friction between surfaces is 0.25. Bolt material is 4.6 quality and can be taken as Jul-Bolt=40 MPa, σem-Bolt=66.7 MPa. The safety coefficient was determined as 6.)
kindly determine the reaction force
The cable AB supports a uniformly distributed load of 12 lb/ft. Determine the angles A and B, and the cable tension at A.
The 30-lb block is held in place on the smooth inclined plane by the force P. (a) Knowing that =20, determine P. (b) Given that P=40lb, find the angle .
Ancient pyramid builders are balancinga uniform rectangular stoneslab of weight w, tipped at anangle u above the horizontal, usinga rope (Fig.). The rope isheld by five workers who share theforce equally. (a) If u = 20.0°, whatforce does each worker exert on therope? (b) As u increases, does eachworker have to exert more or lessforce than in part (a), assuming theydo not change the angle of the rope? Why? (c) At what angle do theworkers need to exert no force to balance the slab? What happens if uexceeds this value?