Q23. A pulley system consists of six identical pulleys arranged in two groups of three as shown below. What is the mechanical advantage of the system? Q24. The pulley in the question above is used to lift a mass of 500 kg through a height of 2.5 m. Ignoring friction, determine (a) The force applied to the free end of the rope (b) The maximum tension at any point in the rope (c) The work done Q25. In the question above, it is found that in reality a force of 1000 N must be applied to lift the mass. Why is this? What is (a) the efficiency of the system and (b) the actual work done in lifting the mass? What becomes of the additional energy expended?

Q23. A pulley system consists of six identical pulleys arranged in two groups of three as shown below. What is the mechanical advantage of the system? Q24. The pulley in the question above is used to lift a mass of 500 kg through a height of 2.5 m. Ignoring friction, determine (a) The force applied to the free end of the rope (b) The maximum tension at any point in the rope (c) The work done Q25. In the question above, it is found that in reality a force of 1000 N must be applied to lift the mass. Why is this? What is (a) the efficiency of the system and (b) the actual work done in lifting the mass? What becomes of the additional energy expended?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

answers:

Q23) 6

Q24a) 820N b) 820N c) 12kJ

Q25a) 0.82 b) 15kJ

Q23. A pulley system consists of six identical pulleys arranged in two groups of three as
shown below. What is the mechanical advantage of the system?
Q24. The pulley in the question above is used to lift a mass of 500 kg through a height of
2.5 m. Ignoring friction, determine
(a) The force applied to the free end of the rope
(b) The maximum tension at any point in the rope
(c) The work done
Q25. In the question above, it is found that in reality a force of 1000 N must be applied
to lift the mass. Why is this? What is
(a) the efficiency of the system and
(b) the actual work done in lifting the mass?
What becomes of the additional energy expended?

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