Neco 2018 Physics Question 6

Practice essay / theory question 6 from the 2018 Neco Physics examination. This question covers Machines, Mechanical Advantage, Efficiency, Work .

Neco 2018 Physics Essay / Theory

Topics: Machines Mechanical Advantage Efficiency Work

Question 6 NECO • 2018 • PHYSICS • essay

A block‑and‑tackle system is used to lift a load weighing 150 N. The arrangement consists of three rope segments supporting the load (i.e., two movable pulleys and one fixed pulley). A constant effort of 60 N is applied to the free end of the rope. The rope is pulled by a hand pump that moves 0.25 m per complete stroke.

Question Parts

( a )

State the ideal mechanical advantage (IMA) of the system.

( b )

Calculate the actual mechanical advantage (AMA) and the efficiency of the system.

( c )

Using the ideal mechanical advantage, determine how far the load is lifted for each 0.25 m stroke of the hand pump.

( d )

Briefly discuss two practical factors that cause the efficiency of a block‑and‑tackle to be less than 100 %.

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About This Question

This is Neco 2018 Physics Question 6. It is one of the essay questions from the 2018 Neco Physics examination.

The question covers Machines, Mechanical Advantage, Efficiency, Work .

View More Neco 2018 Physics Questions More Neco Practice Questions Back to Questions

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