Neco Model Questions Vol1 2017 Physics Question 6

Practice essay / theory question 6 from the 2017 Neco Model Questions Vol1 Physics examination. This question covers Simple machines, Mechanical advantage, Efficiency, Work and energy .

Neco Model Questions Vol1 2017 Physics Essay / Theory
Topics: Simple machines Mechanical advantage Efficiency Work and energy
Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2017 • PHYSICS • essay

A system of three pulleys is used to raise a load of 200 N. Two of the pulleys are fixed to the ceiling and the third pulley is movable and attached to the load. The rope is pulled with a constant effort of 55 N. While the load rises 0.30 m, the point of application of the effort moves 1.20 m. The system is not ideal; the effort required is 10 % greater than the effort for an ideal (frictionless) system. Answer the following:

Question Parts

( a )
Calculate the ideal mechanical advantage (IMA) of the pulley arrangement.
( b )
Determine the actual mechanical advantage (AMA) of the system.
( c )
Find the efficiency of the pulley system expressed as a percentage.
( d )
If the same load is to be raised a vertical distance of 5.0 m using this pulley system, calculate (i) the total work done by the effort, (ii) the work done on the load, and (iii) the energy lost due to friction.

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About This Question

This is Neco Model Questions Vol1 2017 Physics Question 6. It is one of the essay questions from the 2017 Neco Model Questions Vol1 Physics examination.

The question covers Simple machines, Mechanical advantage, Efficiency, Work and energy .

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