Neco Model Questions Vol1 2020 Physics Question 6

Practice essay / theory question 6 from the 2020 Neco Model Questions Vol1 Physics examination. This question covers Machines, Pulleys, Mechanical Advantage, Efficiency, Dynamics .

Neco Model Questions Vol1 2020 Physics Essay / Theory

Topics: Machines Pulleys Mechanical Advantage Efficiency Dynamics

Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • essay

A system of two ideal pulleys is used to lift a load weighing 150 N. The upper pulley is fixed to the ceiling, the lower pulley is attached to the load, and a single rope is wound around the fixed pulley, passes under the movable pulley and is pulled vertically upward.

Question Parts

( a )

Determine the ideal mechanical advantage of this arrangement.

( b )

If the effort force applied is 80 N, calculate the acceleration of the load.

( c )

Assuming the rope and pulleys together have an overall efficiency of 75%, find the distance the effort must move to raise the load through 2.0 m.

( d )

Briefly discuss two practical reasons why real pulley systems rarely achieve 100 % efficiency.

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About This Question

This is Neco Model Questions Vol1 2020 Physics Question 6. It is one of the essay questions from the 2020 Neco Model Questions Vol1 Physics examination.

The question covers Machines, Pulleys, Mechanical Advantage, Efficiency, Dynamics .

View More Neco Model Questions Vol1 2020 Physics Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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